Front Seat Belt Anchorage problems of the 1996 Dodge RAM

The seat belts in the rear cab of the truck have failed. They do not lock when the two pieces are attached. I can put the latch in and it will not stay locked. It unsnapps and the children cannot use the belts. These are located in the middle and passanger side of the truck in the rear. This is a safety concern and would like to have it checked out.

While at a stop light another vehicle hit the consumer from behind the seat belts disconnected from the anchors, causing injury to the consumer and children. Please provide further information.