I'm sorry your going through this
I honestly don't have any advice on how to correct their behavior, but if they are going outside, like to your car and you don't want them to I would suggest putting chainlocks on the doors, up high out of their reach. We had to do this when my sister was little because she learned how to unlock the doors, then would open them and let the dogs outside to run loose
It definitly stopped her from opening the doors! And if their not supposed to be using the phone, could you maybe get a code that you have to use to dial out?
I hope the skinkid mommies on here have some advice on how to get their behavior to stop though!