Remove windows using a large hammer ... problem solved !!!!
Lets start with telling us what kind of vehicle it is. Then tell us if the back doors don't unlock with the key FOB or if the drivers door switch does not work.
is it central locking? try to open doors from inside, otherwise locking actuators are bad, fried, or clogged due to dust.
backdoors ... sure you dont have the child safety locks on?
My car backdoors will not unlock. What can I do to fix this?