Sort it out please

I used Rain 5G for a while - then my computer was not compatible with the 5G, however, I decided to downgrade to 4G with a MIFI device. All went well when I spoke to the consultant and told him to cancel the 5G and whatever was outstanding I will pay including the 4G. The consultant promised me high and low that it would be canceled. This was in July! Under the impression that all was well until the bills started piling up for 2 services, one of which I do not use. Does it really make sense to have 2 services for 1 person? Anyways, I then emailed them to at the beginning of September to ask them to cancel it. Lo and behold when I logged on to the platform it was still activated. Last night I had enough and asked them again to cancel it and to no surprise when they ask you in the feedback what the problem was it did not want to accept my comment, when I tried it the next time with no comment it went through. The convenience hey. This is making me fed up - if I wanted to pay almost R1000 per month, I could have used a different service provider for less than that! The customer service is also very poor when it comes to replying. Surely for goodness sake, the company should wake up if the responses are being negative from the clientele. Don't even mention the messenger on Facebook. BTW.... my notification keeps on popping up saying that the 4G network will be phased out soon.