Poor service

I have been charges a back out fee at Vodacom where I have always paid my account, I send my bank statement through to let proof that I am not supposed to be charge an extra R100 for back out fee. logged a SR, spoke to different agents, all come with promises that is not lasting. the last person I spoke to claim to say that he will take ownership and still nothing happen. This issue has been going since Oct 2019. I can not still struggle to get my refund for charges that I have paid long time back. I have been told all the time its pending, I am sick and tire of pending and speaking to different agents, my view of Vodacom's world class service has definitely change

MR September Acc no I***