Apparently, I Signed Up for Paper-Free Billing...
Yes, this occurred to me also, didn't receive my paper bills for three months...I contacted them when they discontinued my service letting me know I hadn't paid them.
They stated they sent me e-bills which was going to an incorrect email address?
I had asked when/who switched me to paperless, and said I did...which did not occur, therefore I let them know that since I did not make any changes I will have to contact Canada Post and inquire if there is mail tampering.
SD became quite nervous about this.