If you have your own modern you can get a SIM only on prepaid from Telkom. They don't advertise it and you have to go to a Telkom shop each month to renew. But it works fine in Glenwood. Download speeds typically 20 mbs upload 5.
LTE is very area specific so try before you buy.
Cell C contacted me but unfortunately could not assist because the service is supplied by RSA web and cell C don't seem to actually be involved.
RSAweb could not give me the mobile number associated with the sim.
RSAweb Also do not answer their helpline telephone number.
Stay away from RSAweb...
For many years I had Telkom ADSL which provided a slow but acceptable service. This degenerated to the level of useless afew years ago, and when Telkom admitted they were not really interested in fixing it in anticipation of fibre (which has never arrived ) I move to LTE. I started with...