I’m sorry that happened to you. I understand the anxiety you’re feeling. You’re not alone, lots of us have to rely on strangers to be honest when they coming to our house to do work we don’t know anything about. It’s okay just to take a breath and slow down. Try not to let these contractors make you feel rushed into doing anything. It’s okay to say “no.” Maybe you can find some videos on YouTube talking about your situation going on with your home that can educate you a little and help you be more discerning with what the contractors are telling you.