Dear O2,
I do not know why I have to pay 21,99 euro this month.
My contract was already terminated before my contract end which was on 24.04.2020. Besides, I also sent the router back and your wrote me an email on 22.04.2020 that you said you got my router.
So, I did not get it why I have to pay for this month (May). Does anyone know?
Thank you.