Netcare not refunding me

I noticed on 6 June that my medical aid had paid the full amount for hospital because Netcare submitted the amount including deductible which I already paid. I queried Netcare and was sent from pillar to post eventually getting hold of Ofentse at Sunninghill who advised me to send claim forms. I did this on the same day. No further response received from her. I also queried her manager who has just forwarded the same email to Ofentse. I also spoke to a Stienie who told me that refunds were done on 12 June and that cheques are deposited once a week, I have not had my cheque deposit. We just want our money back please, it is wrong of you to submit the incorrect amount to medical aids and then not to advise the patient that their account is in credit. It is also wrong of you to keep my money for over a month which is not yours (medical procedure was done on 11 May and my medical aid settled your account on 21 May)