November 2024 I opened a lay by for a television hisense 75" it was R12999

November 2024 I opened a lay by for a television hisense 75" it was R12999. I made my last payment in March 2025. When I went for collection the manager said the price went up. I asked for my money back, they asked for bank details. But till today I have not received my money. They say my bank account is wrong and that is not true.