bailliffs

hi everyone,my first time on here ,so hello to you all. im being hassled by bailliffs (apparently from northampton county court) over water rate bills built up by my ex whilst he lived at the address. i didnt reside there as we fell out and i moved out as it was deemed that he could do the place up and afford it on his own,what a mistake,he promptly lost his job and ran up debts that i am now left with,.Can anyone help me out with advice, i have had two letters through my door and they are threatening to come and remove my goods to pay for the debt,im worried sick