No contact with Telkom Mobile

I was contacted by an agent with Telkom Mobile offering me the 'super fast' LTE - I stupidly signed up for the 20GB LTE package but kept my MWeb uncapped package for 2 months. Once Mweb came to an end, my kids started using LTE. What a disaster - they ended up having to go to university to use the wifi as the response was pathetic. I have since the beginning of October tried to get someone to help me at Telkom mobile. I called *** - spoke to the same agent thrice but no response. I am giving up as I now find out that LTE in my area is 'limited'. I am now switching back to Mweb and wanting to cancel this useless contract. BE VERY AWARE OF LET BEING OFFERED BU TELKOM - ONCE SIGNE UP - NO HELP!!!!