Vodacom I'm dying because of your company

Vodacom please fix my account as I'm in my lowest times. I got upgraded to a sim only contract but since then my life has been a mess. Vodacom has been taking an taking from me. The contract Was 269 but I owe vodacom more than a 1000 rand. Month to month it increases. I got billed for a contract that I paid for. More than I was supposed to pay. Now I get told I owe advance. Paid for the advance via airtime. Please help me guys, I'm dying of depression because I don't have the money. Something that I thought was going to benefit me is killing me