TFG REFUSES TO REFUND AFTER ADVERTISING OUT OF STOCK ITEMS

I ordered an item that was advertised online at Markham, paid and recieved an order number p***. Then I was told the item is out of stock and I should click on a link to claim my refund, I clicked on the link and it wasn't working, I called and spoke to Estelle who ask me to send the email with the link as they were trying to sort it out and will get back to me, I never heard from them again. I called again and spoke to Craig who said I must email my bank statement with the order number and I did, still nothing happened. After another week I called again and I was asked to send the bank statement Again and I did but still nothing happened. Today the 11th of November 2020 I still don't have my refund and it's going for a month now. I called again and spoke to Juanita who told me the bank statement was sent to refunds department only yesterday and I must wait, I asked for a direct line to the refunds department because I felt they didn't wanna talk to them, she told me they only talk to the refunds department via email, the same email they are not responding to. I asked to speak to a supervisor or someone senior to her, she asked me to hold on while trying to see if they are available. After holding on for a few minutes she told me her second in charge Clinton is getting the refunds department to expedite my refund and I will get it as soon as possible. I just feel they don't wanna refund me they wanna give me a run around until I forget about it.