Very Very bad service

I have logged a call on the 08 of April for an amount that was wrongfully loaded on my account and I was informed by Lerato that it will take 7 days for the credit to go through. I phoned again today 22 of April and nothing has been done. I was informed by Thendeka that she will reload the complaint and transferred me to cancellations and new contracts also no help and I am informed to phone back on Monday to follow up. I always pay my account on time but when I need something from Vodacom its always an issue and such a struggle to get service from this company. What a disgrace.