Good morning, I'm sorry but I don't speak German so I need an English assistance.

I am not an o2 customer, I've never had an o2 contract, and yet today I've noticed I received a 29.99€ charge on 17/04/2020. I honestly have no idea what that is about, I think it's a mistake.
I've read on your page about other customers facing similar issues.

The payment details are here below:
Telefonica Germany GmbH + Co. OHG
Kd-Nr.: ***, Rg-Nr.: *** ***/* 
Ihre Tarifrechnung
End-to-End-Ref.: ***
Mandatsref: *** 
Gläubiger-ID: DE9700000000142462
SEPA-BASISLASTSCHRIFT wiederholend

I am happy to provide the full details in private.
I haven’t subscribed a contract with o2, so this is clearly a mistake and I must request for a refund.

Thanks