I will let people know I am displeased, try to be polite, and get some satisfaction that way. If it is like shovelling poo uphill, after about fifteen minutes I may turn a bit Jack 'you can't handle the truth' Nicholson. This would be an absolute last resort but sometimes those people who are so keen to observe THEIR rights often have scant regard for the rights of others.Family , friends or strangers it's the same M.O., I am not a bystander - my kids cringe when I park up and break up unfair schoolboy fights etc, my other half worries about it too. We are who we are, in the past I have been helped out of sticky sits. by others I like to repay the favour if possible.