Refund not paid out

I previously had a 2 year contract with Telkom and was paying in time. When the contract ended I decided not to renew the contract. However I paid more than what I was supposed to pay.

In early November 2017, I called and notified them. They than told me to forward the banking details of which I did in numerous occasions. It's now January 2018 and I haven't received my refund. They always say they have escalated the case to the relevant department but no communication has been sent to me or a phone call. I keep on calling every day but no one seems to assist and give me the reason why it is delaying up to now.

Telkom is extremely bad in communicating and customer service, they lie all the time. There is this phrase they always use " I and my Manager have escalated the matter to the relevant department". When we owe, we get a call with immediate effect but when they owe you, you get ignored.

I have never experience such a dishonest company in my life. I want my refund ASAP or I will escalate this to the ombudsman.