Telkom is one of I think 2 ISP's that provide coverage for our area, where the rest have this inverted coverage circle on their coverage maps.
Their service however, is awful in every aspect. The line always has high latency and regularly drops (so much for coverage) and when we queried it the first time, they brushed off the issue on a weak router, of course the b618 makes no difference and sucks just as much. When the line goes down completely, which has happened about 3-4 times, they give us stupid suggestions like turning it off and on - like we haven't tried that 10 times already.
We had adsl through a 3rd party isp on telkom lines before the lte-a and it was even worse in dropping connections. 10mbps copper to the exchange, 4mbps copper to our house, so utterly trash. Telkom/openserve looked like they laid fibre halfway down the road in our neighborhood and stopped, so was probably a false hope for fibre roll out.
TL/DR, telkom's coverage is misleading, their service sucks, their support staff are incompetent and their 2 year contract business model is obsolete. I despise Telkom
How to improve? Heck, customer service and literacy first. Then fixing the network coverage and quality errors.