No contract. No contact. How to cancel unreceived contract?

[ppaa]

I applied through the website and I wasn't contacted for the first 10 to 15 days to check my speed compatibality. I went to a Vodafone shop and told me my application isn't in the system and I shouldn't take the vodafone service because the maximum speed is 16Mbps. I have a daily consumption of 7-10GB. 
Some time later I receive an email saying I will receive a letter and the next day the router will follow. I never received this letter but the router came. 

Since I experienced bad user experience on the website to report the issue and I received a very bad customer service I decided not to open the router and send it back. Now how do I cancel my contract if I don't have a customer number and contract number?

[reneromann · Accepted solution]

I'm afraid that you cannot cancel the contract that you made in the shop. There's no withdrawal right for such contracts - and all the details you are asking for are in the box with the router.

Just sending this package back does neither constitue a withdrawal not a cancellation nor does it mean that you won't have to pay for the contract you made at the shop.

[reneromann]

Just to make things clear: If you sign a contract in a store, it is final and legally binding - there's no withdrawal right for contracts signed at a shop that works similar to the one for online contracts.

[ppaa]

Just to make things clear you have a problem understanding. 

I did not sign a contract at the shop. 

I went to the shop to get more information after I APPLIED ON THE WEBSITE. The manager at Vodafone shop told me don't take vodafone service it's really slow at 16mb go to Telekom they have a shop in the center. 

I DID NOT SIGN A CONTRACT AT THE SHOP. 

I DID NOT RECEIVE A CONTRACT BY MAIL.