Vodacom is *****ing my money. ******* debit from my bank account.

Vodacom has deducted money from my bank account for a contract that I don't even have and when I finally got through to the call center I was told that they cannot help me unless I am a Vodacom customer. I have now been trying to get someone from Vodacom to refund me for over a year. Every time I try to get through to Vodacom I spend more the 45minutes on the call. I have already spent more than R2500 on airtime just to get this resolved.