Capitec Bank ***** department not functioning and does not provide feedback.

I paid money into capitec account people pretending to be car dealers. My bank (Discovery) advised me to open a case and provide them with case number. I did supply my bank with all information (contracts, I'd copies of the dealers, SARS tax clearance, invoices with bank details) I got from the dealer. My bank (Discovery) informed Capitec ***** dept with case numbers to freeze the receiving capitec account. My bank doesn't receive feedback from Capitec. Where can I complain about poor service from capitec?