As your experience seems to match ambroseg1's see his comments in the RazoWeb thread:
http://mybroadband.co.za/vb/showthread.php/522785-RazoWeb-ADSL-Product-feedback?p=11277759&viewfull=1#post11277759
... throttled by TI for excessive use in August & September
http://mybroadband.co.za/vb/showthread.php/522785-RazoWeb-ADSL-Product-feedback?p=11278217&viewfull=1#post11278217
If this describes your habits it could well be that TI have moved your account to a separate category reserved for serial offenders. Ambroseg1 and I are just surmising ATM as ranger is not available to confirm or deny.
I moved over from Mweb on Tuesday, therefor it is impossible that I am an type of offender with Telkom.
Also the usage tracker doesn't even show any sign of a bar yet.
I think it probably is congestion at the exchange as tracert is all over the place:
Microsoft Windows [Version 6.3.9600]
(c) 2013 Microsoft Corporation. All rights reserved.
C:\Users\reactor>tracert
www.bbc.co.uk
Tracing route to
www.bbc.net.uk [212.58.244.71]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms 192.168.1.1
2 8 ms 7 ms 8 ms ti-224-224-01.telkomadsl.co.za [105.224.224.1]
3 16 ms 15 ms 15 ms ti-224-0-06.telkomadsl.co.za [105.224.0.6]
4 9 ms 9 ms 9 ms ti-224-0-13.telkomadsl.co.za [105.224.0.13]
5 10 ms 10 ms 11 ms rrba-ip-hsll-1-wan.telkom-ipnet.co.za [196.25.39
.37]
6 200 ms 198 ms 190 ms lon-ip-hsll-1-gig-0-1-0.telkom-ipnet.co.za [196.
43.9.46]
7 183 ms 180 ms 222 ms ldn-b5-link.telia.net [62.115.35.89]
8 180 ms 187 ms 179 ms atos-ic-151907-ldn-b5.c.telia.net [80.239.132.14
2]
9 * * * Request timed out.
10 200 ms 198 ms 210 ms ae0.er01.telhc.bbc.co.uk [132.185.254.109]
11 193 ms 197 ms 195 ms 132.185.255.149
12 197 ms 198 ms 201 ms bbc-vip116.telhc.bbc.co.uk [212.58.244.71]
Trace complete.
C:\Users\reactor>tracert
www.bbc.co.uk
Tracing route to
www.bbc.net.uk [212.58.244.71]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms 192.168.1.1
2 10 ms 10 ms 12 ms ti-224-224-01.telkomadsl.co.za [105.224.224.1]
3 42 ms 16 ms 16 ms ti-224-0-06.telkomadsl.co.za [105.224.0.6]
4 10 ms 9 ms 10 ms ti-224-0-13.telkomadsl.co.za [105.224.0.13]
5 10 ms 11 ms 10 ms rrba-ip-hsll-1-wan.telkom-ipnet.co.za [196.25.39
.37]
6 178 ms 178 ms 181 ms lon-ip-hsll-1-gig-0-1-0.telkom-ipnet.co.za [196.
43.9.46]
7 188 ms 240 ms 181 ms ldn-b5-link.telia.net [62.115.35.89]
8 187 ms 178 ms 178 ms atos-ic-151907-ldn-b5.c.telia.net [80.239.132.14
2]
9 * * * Request timed out.
10 193 ms 193 ms 198 ms ae0.er01.telhc.bbc.co.uk [132.185.254.109]
11 196 ms 194 ms 196 ms 132.185.255.149
12 199 ms 203 ms 206 ms bbc-vip116.telhc.bbc.co.uk [212.58.244.71]
Trace complete.
C:\Users\reactor>tracert telkom.co.za
Tracing route to telkom.co.za [196.43.22.222]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms 192.168.1.1
2 8 ms 7 ms 7 ms ti-224-224-01.telkomadsl.co.za [105.224.224.1]
3 14 ms 13 ms 14 ms ti-224-0-06.telkomadsl.co.za [105.224.0.6]
4 10 ms 9 ms 9 ms ti-224-0-13.telkomadsl.co.za [105.224.0.13]
5 10 ms 9 ms 9 ms 165.165.216.221
6 10 ms 10 ms 10 ms 196.43.39.162
7 12 ms 11 ms 11 ms rrba-ip-bssr-1-ge-2-48.telkom-ipnet.co.za [196.4
3.23.6]
8 13 ms 12 ms 12 ms nbsc-ip-bssr-2-atm-5-0-0-1.telkom-ipnet.co.za [1
96.43.23.34]
9 17 ms 16 ms 13 ms nbsc-ip-rcache-1-vif0.telkom-ipnet.co.za [196.43
.22.222]
Trace complete.
C:\Users\reactor>tracert telkom.co.za
Tracing route to telkom.co.za [196.43.22.222]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms 192.168.1.1
2 14 ms 13 ms 12 ms ti-224-224-01.telkomadsl.co.za [105.224.224.1]
3 10 ms 10 ms 10 ms ti-224-0-06.telkomadsl.co.za [105.224.0.6]
4 9 ms 9 ms 9 ms ti-224-0-13.telkomadsl.co.za [105.224.0.13]
5 15 ms 14 ms 15 ms 165.165.216.221
6 10 ms 11 ms 12 ms 196.43.39.162
7 11 ms 10 ms 10 ms rrba-ip-bssr-1-ge-2-48.telkom-ipnet.co.za [196.4
3.23.6]
8 12 ms 12 ms 12 ms nbsc-ip-bssr-2-atm-5-0-0-1.telkom-ipnet.co.za [1
96.43.23.34]
9 13 ms 15 ms 16 ms nbsc-ip-rcache-1-vif0.telkom-ipnet.co.za [196.43
.22.222]
Trace complete.
C:\Users\reactor>tracert telkom.co.za
Tracing route to telkom.co.za [196.43.22.222]
over a maximum of 30 hops:
1 <1 ms <1 ms <1 ms 192.168.1.1
2 7 ms 7 ms 7 ms ti-224-224-01.telkomadsl.co.za [105.224.224.1]
3 156 ms 215 ms 215 ms ti-224-0-06.telkomadsl.co.za [105.224.0.6]
4 9 ms 9 ms 10 ms ti-224-0-13.telkomadsl.co.za [105.224.0.13]
5 15 ms 16 ms 15 ms 165.165.216.221
6 11 ms 12 ms 13 ms 196.43.39.162
7 10 ms 10 ms 10 ms rrba-ip-bssr-1-ge-2-48.telkom-ipnet.co.za [196.4
3.23.6]
8 13 ms 12 ms 11 ms nbsc-ip-bssr-2-atm-5-0-0-1.telkom-ipnet.co.za [1
96.43.23.34]
9 13 ms 12 ms * nbsc-ip-rcache-1-vif0.telkom-ipnet.co.za [196.43
.22.222]
10 14 ms 12 ms 12 ms nbsc-ip-rcache-1-vif0.telkom-ipnet.co.za [196.43
.22.222]
Trace complete.
C:\Users\reactor>