on 26-03-2020 17:37
on 26-03-2020 17:52
Try the order details page from the "my orders" section of your MyO2 account, just press on the order number to open the order details page.
You can press print order details at the bottom and then save as a PDF instead of printing and upload the PDF or a screen shot should do as well
on 26-03-2020 18:06
on 26-03-2020 18:07
on 26-03-2020 18:07
Customer services are your only hope then Guide: How to find help & contact O2