Credit rating:The phone companies use a private credit rating system between themselves,so you could have difficulties getting a new bill pay contract.
Belgard:Will they take you to court?They might,but in my experience,they just keep sending letters in a series then give up.
(Was the first a 7 day notice?)
Then they send an offer(% discount).
The debt collection could also be passed to some of the other agencies for them to have a go(Dun and Bradstreet,Experian etc)