The Door Company Ottawa

We had The Door Company come install one garage door. They came, and it was the wrong measurements, so they needed to come back, but with the door being wrong, they ended up breaking our ceiling lights. Two weeks later they arrived and fixed the door. After they left, we received a bill saying $0.00 owing. Two weeks went by and we didn't hear anything, then they sent me an email saying we still owe money. When I sent them the bill we received of $0.00 owing, it took another two weeks to hear from someone, but still no answer, just running in circles. Then it was the sales manager who messaged. I explained the same thing to him, and still nothing back from them for another week. Then I scheduled a call with the manager, but when I called him, he tells me he is in meetings all day so he can't contact me. That was last Wednesday, and I still haven't heard anything. This is horrible customer service. I haven't gotten any answers. We've literally had this on our mind since December. I have all the copies of the bills they sent us and all the emails if ever you would need any of that.