Lens Error - Powershot SD850 IS Camera

One of my kids dropped the camera while the lense was open. When we tried to turn off camera, lense wouldn't retract and we noticed the smallest part of the lense was kinked / pushed in on one side. We gently pulled it out to make it flush but the camera would still not retract. In addition, this smallest / front part of the lense is now slanted versus squared as far as taking a picture. I think when we pulled it out to make it flush, we also turned it a little bit and now it won't turn back either? Help?