worst service ever

I ordered and paid for my phone on 22/05/2021 and was not informed about my delivery date. Two weeks later I made an enquiry and was sent an email stating that my order was in finance. I had to enquire further because I did not understand why it would be in finance when I paid with a debit card and the money was deducted from my account. I chatted online to a customer service agent who informed me that the error was on my side and that the bank had not released the money. I told her that this was not the case because I checked with the bank and the money is gone. She was adamant and after a heated discussion stated that she would escalate the matter and get back to me. A week past and nothing happened. I resorted to posting about the issue on Hello Peter and only then did I get a response stating that the matter was being looked at. Days passed and yesterday I got a call from another agent stating that I had been overcharged and that is why my order is in finance. I do not understand why it has taken 3 weeks for this to be communicated to me. Secondly I do not understand why an error on their side is now my problem. The agent told me that I would have to wait another week for a phone. I have found their service completely unacceptable and will never buy anything from them again.