Dissatisfied unhappy furious client

I accidentally paid my rent over their account ND have requested a refund since 25th of June.. Everyday I am told that the money will be refunded the next day. It's been over 2 weeks I am waiting for my refund and I have spent over r300 airtime trying to get my money back.

They are all a bunch of ***** and when you ask to speak to a manager, they make you hold for 30 min and then drop the call..

The worst is I don't even owe them