Ex DH and I divorced in 2018. He moved out of the marital home. We agreed that he would continue to pay bills that were in his name during the marriage and I’d pay the reminder (for context, he paid no child maintenance post-divorce). Gas and electric came out of his account. He decided earlier this year that he had no recollection of such an agreement (I have it in messages that’s what we agreed), called me a thief, scrounger, etc , and asked EDF to refund him as he moved out. The bill was on both names. EDF is now chasing me for the amount (3k).
EDF said that they will take into account the wishes of either account holder - as he called and proved he wasn’t living there, they refunded him. They did not seek my consent to do this as the other account holder. I understand they won’t intervene in private matters.
Please could someone advise if I’m liable?