My husband refuses to pay his huge phone bill and I don't know what to do.

We keep getting these letters to my house... the amount has gone up from $450 to $800 (I guess because of interest) and my husband's thinking is that because there was no social insurance number assigned to the account, "he can get away without paying."

My understanding is phone companies have some sort of agreement with banks... we paid the bill with the old provider through my credit card, so I suppose they have my old (but expired) credit card number.

Is this ruining my credit somehow? Is he right? What the hell do I do? He's convinced there is nothing they can do, even though they know his full name and ADDRESS. I don't want people coming to my door. Please help me reddit. :(

EditL we are from canada.