Bad service

I sold my vehicle and the outstanding amount was settled. Wesbank went and took another payment off for the vehicle that i don't own anymore. They refuse to help me to sort this out. All of this happened 25th May 2021 and up to today with emails flying up an down no one from there team even made an effort to assist me with this problem. For some people R2400.00 is not a lot but to me it is. Today is the 7th of June no word from Wes Bank. I think this is very unprofessional. I will never recommend this company for motor finance to anyone. They are very quick to take your money but they have the worlds time to assist you with no response. Pathetic