I haven't received cancelation letter. (more than a months passed since I pay the cancellation fee)

[Jenniiy]

I canceled my internet service on Sept 17th and the confirmation letter hasn't been sent to me. The store manager told me that the letter will be sent within 3 weeks, but it's been more than a month. I paid 174.9 euros for the cancellation at the shop and returned the modem to the shop, but my account still shows that the contract periods until 10.09.2020. Is there any problem? or is it something that I have to wait longer? Please let me know what is going on because I'm keep getting my internet bills.. I don't want to pay extra because I already paid lots of money to cancel this. 

Thank you,

[Seb4sti4n]

Hello Jenniiy,

a contract has a term of at least 24 month.

I'd be happy to see if the notice of termination was filed for that period. Please send me a private message with your customer numbers and the customer password.

Kind Regards

Seb4sti4n

[Jenniiy]

I just sent you a private message! Please check!

Thank you,

Jennifer