We completed sale of our house today l. Due to the bad snow yesterday my husband went back to the house this morning to remove the last bits out the shed. We completed at 12 but unbeknownst to me my husband broke down on the motorway. He waited two hours for RAC. Got to the house at 2. Angry buyers wanted keys which he gave to them explained the situation. Took half an hour to clear shed and left. We've just had an email saying they are suing us for out of pocket expenses as they were unable to start moving in till 3pm. When completion was at 12.30. Can they sue us for the 2 hour delay ? Thanks