What kind of lawyer do I need? We purchased solar panels that have never worked & company won't return our calls or emails.

A yr ago we got solar panels and they have never worked. We have called and email the company since the 1st month and they don't return anything. They did email to offer us money but I said no cause I want them to come out and check if they work or we need more. They sent us the contract that was not complete. They have another lawsuit against them from what I've read and horrible ratings on BBB. Lots have same issues. My neighbors have the same company but theirs are working great for them. Not sure why not us. My family needs help getting this resolved. It's been a nightmare