Order never came. Online shopping charges more than basket. No response from customer service.

The TFG online shopping experience and Sportscene app are the two worst online shopping experiences I have ever had. The customer service is non-existent despite multiple emails and phone calls. End payment amounts are incorrect. I called in, the issue was acknowledged and no resolution. The email response I finally received today was 'please re-place the order and try a different payment method if possible.' I tried every possible way, but the amount kept coming up as a lot more than the basket. It's also not possible to use discount codes on the app (all rules adhered to - min order, full price items only etc) - it gives a discount and then removes it when you want to pay. I have an order outstanding from 16th September - nobody can tell me anything about it. I want to cancel because the whole experience has been so terrible and I don't want to have to keep asking about my order. Don't bother buying from then online as I see others have also had non-deliveries. They also give out your personal information to call centres.