My car was ****** and they don't want to settle the credit and never defaulted the premium neither claimed before with them

My car was ****** and they don't want to settle the credit and never defaulted the premium neither claimed before with them. They have sent some guy his name is Robbie and he was so ****** towards me during the whole invistagation His finding he said I orchestrated the theft of my vehicle so I asked for proof they didn't provide and still refusing to pay