Yes but he is not allowed to tow the vehicle with a person in it.
If he is beating on your door. and You have your vehicle on public street or in your driveway he may just drive away with it. If your vehicle is in your garage or on your private property He cannot legally break the entering to obtain the vehicle
one word: YES
In the UK it can, if the driveway is private property.
No they are not supposed too.
Yes
No one has the right to enter your property to repo a vehicle. I your vehicle is out in the street, then its fair game. If you see the repo man coming but has not hooked up to your vehicle, you legally still have possession of the vehicle. Once the vehicle has made contact with the truck the vehicle belongs to him.
yes
NO, a lease is simply a contract like a loan. DEFAULT of either calls for repossession.
No, a repo man can enter your driveway but if the car is in a locked garage they do not have the right to enter without your permission. This rule applies to your home as well.
yes
Call the repo guys OR the lender.