Bad customer service at House & Home Krugersdorp

Hello Peter, I have a complain. I bought a Hisense machine from House & Home, Krugersdorp Hyper President. The machine stopped working and it was still under warranty. I lodged a claim and Hisense sent a Technician who came and checked the machine, noticed that it can't be fixed. He told me he will write a report so that I can get a new machine. Hisense refunded House & Home, however, the prices of washing machines had gone up. So I was asked to pay the balance and get a new machine, that was not a problem, I had to look for a machine that I want and will be able to pay for it. I got a machine which was cheap from HIFI Corporation, and asked for a refund, they declined and stated they can better the price. The same week they had the same machine HIFI was offering at reasonable prize, I paid the deposit to add on my initial credit from Hisense, everything was fine. In the middle of September I went to settle the balance and pay for extended warranty. The cashier paid my money into the wrong account, for someone who had deposited a different machine. And my machine was not available in the shop at the time of payment. Phillmon who assisted me promised to call me. Each time, I went when Phil calls would find the machine sold due to limited stock. I understood what Phil told me about limited stock. I stayed for more than a month and now when they have the stock and Phil called again. The typo issue is brought in, my payment made into a wrong account due to the mistake of their staff. Phil called me to come fetch the machine but when I went on the 23 October 2020, he was not on duty. Gert who is the Manager and was aware of the whole proceedings from the time I lodged a claim back in July 2020. Told me they must recover money from the customer whose account was paid with my money and if not they will not give me the machine. What I don't understand is Gert noticed the error of his staff but can't help, because he has limited powers, can't take a decision when he is the manager of the shop. Should I suffer for the mistake of his staff.