Poor customer service

The worst customer service experience ever, I submitted my claim on the 6/8/25 to William Walker who informed my claim was approved i have been waiting for my car to fixed and I was informed I should expect my car by Friday 29/08/25 only to be told my my windscreen claim was only submitted on-the 27/08/ and to will be available in 6-8 weeks, I'm so frustrated I want cancel this policy because it's failing me