You may have been scammed, @Walker1 - take a read here, and if you think you have been, then contact Customer services tomorrow around 8am, numbers here: Guide: Coronavirus Community Help and Support
Tagging Community Managers just in case: @Martin-O2 @TheresaV @LukasB
Check if you have a discount as a bolt on
Guide: Where is my discount or Extra Data?
Track usage, upgrade and get support with the My O2 app