Unfair Repudiation

I just want you to alert everyone about this company called MotoVantage that claim to cover dent & scratches, when you claim they will reject the claim on unrelated issues. I logged a claim for a scratch on the front bumper in our vehicle, the claim was authorized and a mobile repairer was sent to us, when the repairer arrived he recommended the work must rather be done at a workshop where the bumper will need to be stripped so the whole bumper will be done as the old paint on the bumper is already coming out, 2 days later they called us to advise that because the bumper was previously done therefore the claim will be rejected. When I asked them if the scratch was caused by poor workmanship they failed to answer, asked them if I am covered for dent & scratch they couldn't answer instead they just want to reject the claim.