Poor customer service from refund department

I've been promised a refund on my deposit for over a month. Every time I am told it will be sorted out and nobody bothers to follow up and make sure it is done. I have phoned Netcare now 5 times with the same result, the last time I spoke to the supervisor Evelyn. She told me its not right and she would sort it out and come back to me. She herself has not bothered to come back to me and no doubt has completely forgotten about the issue. This is really poor customer service.