Bad contract unresolve

I bought a new car and it was added extras i was not happy about it from first time and on the 22nd May 2026 came for ammend contract and i wasn't given but told stories. On the 12th June 2026 arranged to meet Cecilia to resolve this extras of R13581,74 and following day she sends me proof of payment R13723, that shows 28th May 2026 that's triggers me. No changes from Bank but she says it paid up and my installment was still the same. I asked new contract after this payments and refund and no one wants to assist at Raceview Alberton.