Where is the service?

I have been trying to close my vodacom account since January. Everytime i visit the shop in Westgate they cannot help me and when i call customer care they have been giving me incorrect amounts every month. In March they offered me a new contract instead of cancelling my contract which i excepted. I told them im no longer using the router and only wanted to pay the new contract amount and handset fee. In March the agent promised to send me a copy of my new contract which has not happened, today we are in October still did not receive a copy of the new contract as promised. The billing on the router was only cancelled when i asked for a breakdown on the amount i had to pay and when i asked them about the refund they said i was not getting any. Every month they give me an amount when i call customer care because the shop can only assist with receiving of payments and according to them they are not able to see more including the breakdown of the montly bill and everytime i call the customer service they give me an amount saying that i only have to pay that amount but the next month the cycle repeat itself. Last month they told me i had to pay an amount which was not more than R340 but i paid R340 for my account to be in advance but to my suprise they have send me msg about arrears amount of R340 and a bill for R229. If there was an arrear amount why did they not tell me last month that i had to pay +- R600 and every other month that i have been calling in, why did they not give me the full amount outstanding? I have been patient for too long now. I will rate you zero not even 1 because the year is almost over and still my query has not been resolved. Everytime i speak to someone they cannot see the comments or conversation between on the last interaction. Their agents also don't disclose all information to their customers who rely on them to keep their accounts up to date, every month you hear something different. Is it so difficult to explain everything to someone who have told you their request? Today i called customer service again and again i could not get the appropriate response to my query. I did not want to complain but i have to in order to get my query resolved.