Regular poster but name changed as outing
I am selling house, offer accepted all going through, we have vacated the property as it's a move across country and in rented. When one of the viewings took place we were still living in property and we got back and found door was left unlocked, wasn't happy mentioned it to estate agent and when we left I left keys with friend sp after any subsequent viewings they could go and check.
I found out from a neighbour a few weeks ago that the estate agent had shown the buyers around without my knowledge prior or after the event, wasn't happy and rang to complain and told wouldn't happen again.
I've have just checked my email now and at 17:10 I had a message telling me, not asking, that they were taking buyers round at 17:30.
The property is empty but I am concerned that I am responsible for the security and if anything has happened there then I am at risk.
DH thinks I should calm down, AIBU to be fuming?