Toyota Financial Non-services

I traded in my vehicle on 18 March 2022. Toyota Finances deducted another installment on 19 March even though the settlement amount was paid. I requested a refund on 25 March and on 28 March I received confirmation that the refund will be paid within 7 to 10 days. I phoned on Friday (8 April) to enquire as the 10 days were over and I was informed that the refund has not been processed. An urgent request was then logged. Today has been 24 days since they took my money and I am still waiting for the refund. Now their numbers are not working and their email address is useless to say the least. When I log into the online account, it still shows that I owe R62000 and my next installment will go off on 20 April. So they are going to ***** money from me again?