Disgusting service from Telkom

I have Telkom LTE unlimited and in the past 2 weeks there have been days where I have no internet connection. I work from home and this is unacceptable as I cannot do my work due to this. Last week I called Telkom 14 times in 1 day, Today I called Telkom 27 times. The consultants cannot assist and transfer you or drop your call and each one has a different explanation. I am at wits end. Went to the Telkom store in Eastgate last week and today. The modem is connected in the store and works and now home again and no internet. They even suggested that I need a new sim card for the modem. Sim card charged and still no internet. I am really stressed about not having internet and don't know what next. No one can assist via the call centre and the service is pathetic. I seem to think there is lately a problem with the network coverage in my area but Telkom is not telling me what the problem is. I am really disappointed in their service at present.