Poor claim processing

I submitted a car accident claim on 31 March 2022 to Budget Insurance and they assigned Renewit Greenstone (RG) to repair my car. I did not get any communication and they never answered calls. I brought this to Budget's attention, making several calls including their assessor Ernest, who referred me to RG. My car has not been attended to almost a month. Am frustrated and wish I never enlisted with Budget. They give unacceptable excuses. Very frustrated customer. Number of calls I made are unacceptable.