Worst company and service ever

Extremely bad service. My company is a "partner" with FinYou to enable the company to provide credit to customers. Since day one there was no service. They claim to manage the admin of the credit process, but do nothing. They are just after as many R350 p/month admin fees as they can get. I have cancelled my contract with them, yet still they are debiting the R350 every month. I cannot get them to stop the debit order - they do not reply to emails, no one answers the phones. The bank cannot assist to stop the debit order as the FinYou has to stop processing from their side, sadly this is not possible as they don't bother to answer any form of communication. It seems they are busy with fraud.