Impossible to contact or get issues sorted

Always great and easy to get a product from them, but after that it is downhill.

I have settled my vehicle finance account, and they still deducted an installment after the debicheck mandate has been settled. All of that is fine, as it takes time to close the debich mandate. BUT, now I am trying to get a refund on the amount deducted after the account was settled, but to no avail.

I have tried calling more than 20 time, emails take 48 hours for a response. Everyime I get through via email, they try to sell me products instead of refunding my R7400 that they still owe me.