Terrible provider service

I am a health care provider. I have struggled with Sizwe hosmed medical scheme for weeks now to get claims paid. Firstly they uploaded my banking details incorrectly. After numerous calls I sent them all the required documentation again. After a about a week after I emailed and asked they informed me it is now updated. Yesterday I phoned them again to be told by the call centre person that my account uploaded is now a Standard Bank account. I do not bank with Standard Bank and never had. He promised feedback from his supervisor that never happened. I phoned again today. The call centre person checked my banking details now it is correct. My claims on the system shown as paid in the beginning of April. But I never received anything because the banking details were incorrect. So she logged two queries for the claims and said I must phone back in 3 to 5 working days. This afternoon I received a statement , the two claims paid into a wrong Unknown Bank account??? How does this makes sense? With the other medical aids banking details are loaded within a day and never incorrect. How long is this going to take, and in whose bank account was the claims paid?