Rude Wonga consultant when following up on overpayment refund

On the 25th of July my partner paid R5,730,86 towards the settlement of ***. That payment was well above the settlement amount of R3,074.00. Wonga has not refunded the overpayment. Instead debited my account R3,000,10 on the 27th of July 2022. When I phone to query this the consultant that answered the phone was rude and dropped the call.