You can cancel it whithin 14 days with an e-mail to widerruf@cc.o2online.de. 

I already sent an email to widerruf@cc.o2online.de. But they said they can not cancel the order. How come they cannot do it on their end?

Where and when did you order the Airpods? 

Online. O2 website

I ordered last sunday 17th

That's okay  

And who say that you can't cancel the order? 

The customer service on this email widerruf@cc.o2online.de. 

Did you sent the "Widerruf" with all your personal Data and the number of order (Auftragsnummer)? 

The customer service did not ask this info. But since you mentioned it, I just sent them an email again, just now. 

I have sent them an email multiple times, but they are ignoring my email

Hello @Ich08 

It takes a few days ... 

You did all right. 

Good luck

Hello @Ich08,

thank you for your enquiry with us in the community!

And thank you to @Bollermann for your help

As Bollermann has already written, all contract data are of course necessary for a revocation. But as I read it, this should answer your question conclusively. Can you confirm that?

All information on revocation in general can be found here:

Kind regards
Jessica