Tke the car back to the repair facility and get it repaired properly. They're entitled to repair instead of replacing, but the repair has to be done right.
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I'd take it to a body shop and have them inspect it and provide you with a written description of the condition of the bumper and an estimate for the cost to properly repair it. Send this to the claims handler who handled your claim along with a photograph of the bumper. If they are not helpful, write to the President of the company and advise them that you are contemplating filing a complaint with the Pa Insurance Department. If this fails to get a positive response - speak to a lawyer in your are who might be willing to act on your behalf. Carefully document everything.
You may also offer to take the car to the insurance company's "recommended repair shop" so they can confirm the damage was no fixed properly.
Please note that we are not forming an attorney - client relationship and the advice is meant to be general. Law Offices of Joel J. Kofsky 1616 Walnut Street Suite 2110 Philadelphia, PA 19103 http://www.phillyinjurylawyer.com/