Door Hinge problems of the 1997 Chevrolet Venture

While driving at 20mph the passenger sliding door opened while in motion . It came completely off the track and also caused damage to the moulding inside the van it also frightened my 2 year old who was seated at the door. Fortunately, she was secured in her child safety seat door was in the locked position and the child safety lock was engaged. Chevy denies there is a problem with the van. This matter is a severe safety issue. It should be corrected before some is seriously injured or gets killed.