PnP Clothing online refund issue

I had to cancel an online order for PnP Clothing. I cancelled the order within 30 mins after placing it. The app gives no option to cancel, so I had to call to cancel. I was told that the order was cancelled and that the money would reflect back into my account within 3 - 6 business days.

That was 2 weeks ago. 7 days later, the order still showed active in my account, and the money has not been refunded. I called again, I was told that the order had not been cancelled, and that it was cancelled after my second call. Once again I was told to wait 3 - 6 days for the refund.

Today, 14 days after initially cancelling the order, I called again, and was once again told that the order had not been cancelled. Now I have to wait another week for the refund, with zero assurance that I actually will receive it. For all I know the same issue will just keep repeating itself.

Not happy at all. I have been understanding and patient up until this point, but this is unacceptable!