No account. Cutting lines

For the past few months, Vodacom keeps on cutting my lines. Firstly,Vodacom cancelled my debit order. This is where it started. Month after month, I had to go pay the account in person at a Vodashop. Secondly, Vodashop demanded payment for 2 months..current amount and then for an amount they apparently charge in advance??? How can a cellphone service be billed in advance? Now, for months now I have been asking for my account to me emailed. Still nothing. I refuse to go and pay the account at a shop because Vodacom still cannot clarify the advance billing. Again they cut my lines. I have no idea what the due amount is. The line is suspended and I cannot even call customer care to find out. What the hell??????? How do you expect payment then???? I cannot wait for this contract to end. I will get everyone I know to cancel their Vodacom