Separated well over 18 months and I'm paying the mortgage solely and the 5 year fixed rate is due to run out in two months. I'm dreading going on the SVR and ex isn't and hasn't contributed anything to the mortgage. He is really dragging his heels to make this as miserable for me as possible. Haven't started court proceedings as in mediation where he only wants to ask banal questions to hold everything up. I can afford to buy him out and have offered this but just no response. What can I do?