There are a lot of companies on the Internet that can help you. The most important thing is to find a time-tested company. If you don't know how to repair garage doors properly, it's better not even try. I had a similar problem, and my friends recommended me a reliable company that does
Garage Door Repair. I called and left a request. The next day I had two guys come and fix my door in a few hours. What's more, they did a diagnostic of all the mechanisms. I now know that my garage door is in perfect condition.