Bonitas Refund ****

Bonitas have officially decided that my bank account is good enough to pay premiums for my brother but not good enough to pay back a refund for over paid premiums after they cancelled his membership. They said they wanted a form to be completed as they did not have bank details on their system, my brother and I completed and sent it back, he signed by the way. they then wanted him to write a letter authorizing for the money to be paid out into my account, which was written and sent back, they then wanted proof of bank account, I sent a bank letter and they felt it was not good enough they wanted a stamped statement which I sent. Then I received an email that said they don't pay into 3rd party bank accounts, but my money was accepted from a 3rd party when I was paying their premiums. What **** is this by Bonitas and they actually feel that it is acceptable??? Surely if reported to CMS they will feel and decide differently. I need to make sure that this will make a dent on their name and reputation for this R1000 refund. After all the hoops and calls to their call centre why refuse to pay, I don't this they need my R1000 to make bank. I've had it with them, I'm done.