Take there time to refunded me on there over charger penalty due to incorrect information in there system

Everytime I call regarding the over charge penalty money that was deduct first they can't see it then they make a excuse that it credit refund is still to be processed. The I get a excuse that I will be in formed once it was done. Until now I have not received any feedback on when your error by taking 3233.90 instead of 1290. When will someone please do the work and pay me back. You did not wait to take my money why must I wait so long and why must I call to find out when this will be slotted.

I am still going to move to a other medical the end of this year. This is unacceptable