Vodacom Makes Me See Red...

I am on a UChoose contract priced at R 49.00 per month.<br> I have being paying the contract since the 4th quarter of 2015, by means of direct deposit with a M65 deposit slip into Vodacom's Standard Bank account.<br> I have all the deposit slips to prove that I have indeed paid.<br> Vodacom tells me per SMS that I owe over R 153, I want to know why.<br> Several requests for a call back have been ignored.<br> <br> This is not the first time that Vodacom has messed up my billing info, with my previous contract, I almost had to pay triple.<br> The problem was resolved with the help of my son's rudimentary knowledge of Latin.