Bad customer service

This insurer has failed to deliver a good repairer for a vehicle that was in an accident on the 9th of December 2018. The validation of my claim alone took way longer than necessary a period of about a month. The repairer of the vehicle received the vehicle on the 11th of January 2019 and only delivered it on the 15th of March 2019. The car broke down on the 23rd of March as a result of poor work done on repairing the vehicle. I was promised a relief and I am still awaiting it. I am thoroughly dissatisfied with this insurer their mediocre service is awfully appalling.