Extremely Bad Service from RSAWEB

Experience very bad service from you guys I never opt to cancel my internet service yet I am being sent emails regarding my service to be cancelled.... first it was the payments isn't reflecting when money was debited from my account and I was told they don't find the payment how is that possible when I try and get hold of support and accounts they don't reply to your emails ...how bad is that for customer service. I send a lady by the name of Rafeeqah Dramat two emails asking her why is my service being cancelled, when she called me and said she will let the accounts department know that my service isn't being cancelled. Another problem I am having is that when i took out the WiFi I was explain by the sales person that in would be paying R395 a month for the WiFi which I agreed on then I was told that was promotion for only three months and my payment after 3 months it would be R515. i was so upset and yet still agreed on paying the R515 after 3 months. I then question it why am i being charged R515 on the 3rd month and not 4th month because my service was activated on the 29th August and was charged R515 last month when I am only suppose to be paying it this month ,when I quaried it they are telling me about a pro rata month even if it was activated on a pro rata I am still due a month before my service goes to R515 i mean on my eamils that i got it says you will be charged R515 after 3 months after your WiFi is activated they cant make me understand why i am being charged R515 on the 3rd month its really been a struggle with this company yet i got two emails from them and when I reply no feedback what's so ever but the e-mail was delivered