Poor service from Vodacom. ****** when it comes to my account

I paid 3 contracts in full after getting a pre cancellation quote. Proof of payment was send to Vodacom. That was in November 2019. After several calls to Vodacom, as they say my accounts is in arrears, no answer or feedback form them. Was on the phone 2 hours on Thursday with a promise that the problem will get escalated to the back office and I will receive feedback by the 6th of January. Try to phone again today but no luck. Previous 2 times I was transferred from cancellation dep to accounts. Then again to cancellations and then accounts. About ten times. Still no feedback or answers.....Bad Bad service. Please contact me on ***