Take off the door panel and examine whats broke. I think you can purchase a new window regulator.
I'm not sure about you model but with most models this type of repair is well within the scope of the backyard mechanic.
1990 190E 2.6
1996 Grand Voyager 3.3
1985 Mustang GT 5.0 5 SPD
1982 Suzuki GS 750T