Vodacom stole my phone number, messed up my credit

February 2015 me and my mother went to Tyger Valley in Cape town to downgrade and transfer my contract from her name to mine. I left for Mexico after I've been notified that the debit order was approved. When i returned to SA on Nov 4th 2015 i was informed via a letter that my contract had been cancelled in June and i need to pay a fine. This was due to the fact that i did not pay my contract. Thinking that i had a debit order on a account, this came as a shock. I contacted vodacom who stated i agreed to a cash contract and not a debit. Seeing that i live overseas i insisted that this was not the case. Vodacom then stated i should contact the dept collectors Burnard, Raaff & Associates as as the case was handed over to them. There is spoke with Trudy who stated i had a verbal contract with vodacom and not a written one. I then requested to listen to a copy of this but to no prevail. I was then told to contact FNB, according to Vodacom a attempt was made to withdraw a debit but was unable to do so due to insufficient funds. Proof from FNB showed that no attempt was made on my acc and there was sufficient funds. I was told if i pay i will get my number, which was false.