Do I keep my Bell Modem If not returned?

[Christopher]

Hey guys answer my question please! So I cancelled my internet cause bell sucks ass and they charge up the ass for their services. Now I have not sent back my modem and I was aware of the fees for not returning it. So now I got billed for it. Now I'm wondering, since I got billed for not returning it, do I just keep the modem or do I still have to send it back? I got this sticker to return it but not a box :s

 

[Tommy]

SEND IT BACK BEFORE THEY SCREW YOU MORE!!!!

Oh and yeah Bell SUCKS...

There is always problems with the modem and it is always down... SAD