Bent frames must be repaired by a licensed mechanic with experience in collision repair and auto bodywork. The procedure usually involves assessing the extent of damage, removing any weak spots, then welding new pieces into place.
The exact cost for repairing a bent frame depends on the severity of the injury and how long it takes to fix it. The typical cost ranges from several hundred dollars to several thousand dollars depending on the circumstance.
Many insurance companies provide coverage for auto repairs depending on the type of policy you've got and the coverage you have in the policy. In general, comprehensive policies include insurance against damage caused by things like vandalism, theft, weather, and other non-collision events. If, however, your vehicle was damaged due to an accident, or any other kind of collision, then you may need to make an insurance claim with your insurer for additional protection.