I am a existing customer who is new to Germany, and I signed up with o2 in august 2020 for a mobile only plan - and through the app I’ve ordered a new device and with it a new plan - now I’m worried that I’ve activated a second line, instead of changing my existing contract. I was hoping to find out if I can undue this second line, to only have a phone delivered on the existing phone line, or if this is not possible, how much it would cost to cancel the mobile only line so I’m not paying for two phone lines.
EDIT: verschoben in Englisch o2_Maria