Mr. price ****ming me

I have an account with these people, I paid them the full amount According to what I see on the app which also converts to a PDF statement. I then called them to close my account and I was told I still owe them money, I then spoke to a manager Jenine who then said I don't owe them money it was an IT error because I put Items in the online shopping cart, did not continue with the purchase and that amount has not cleared. She then logged a ticket with IT with the ref number:816575 and said I should call before end of business on Monday 30.10.2023, as discusses I then call and ask to speak to her.... a very rude lady she is. She then says the ticket has been resolved the money from the cart is cleared but I still owe, I then asked how when receipts from the shops and the app clearly said I no longer owe? Shen then says the app doesn't always work I need a statement which I never get by the way. I then asked her to send me a 3 months statements it really makes no sense. I need someone from that place to call me and resolve this issue in a professional manner can it also be some that knows what they are talking about because as far as I am concerned. I have paid these people all the money they said I owe them.