Useless

I have paid a sum of money to wesbank in Spetember for a vehicle we have on finance. I completed the capital reduction form and sent it in as stipulated. October I saw it had not been moved to the capital reduction side. Called again and emailed all forms again. Nothing was actioned. Phoned again in october, spoke to adviser, copied In the manager and asked for feedback as it was not done. Yesterday I phoned again...spoke to an advisor that assisted me promptly and advised that the manager would call me back after their meeting. I still have not recieved a call or feedback as to why it wasnt loaded. During all this we as customers lose the money In interest or Installment reductions for their utter incompetence to complete a simple task. Very frustrated and disappointed that I'm paying a company so much in interest to a company that cannot get small things right.