R60 000 cash back from Hyundai

Last year August Hyundai promised R60 000 cash back when ladies buy cars since it was women month. Hyundai said they paid deposit for me and prime rates. This month prime rate went down then I talked to Wesbank and asked about the R60 000 paid by Hyundai. Wesbank said there are no records of any deposit. I also paid R40 000 to top up for the deposit☹️no records of any payment at Wesbank. Don't misinterpret me I sincerely love my car the only concern is the promised cash back🤔