Terrible service once again from Discovery Insure

Early this year I submitted a claim to Discovery Insure as I had hit a pothole and wanted to make sure that there was no under carriage damage. After being given the run around, I eventually received my vehicle months later and advised all is in order. When I took in my car for the annual service in October this year at the dealership they indicated to me that there was indeed under carriage damage which Discovery assessors failed to pick up and was causing further damage to the vehicle. When I brought this to their attention, they referred my case to Net Assist as they blamed them for the error. It's been an absolute nightmare trying to liaise with these people. Every single week I call to follow up and each time it's the same story. I am so tired of Discovery Insure....really I'm defeated. Do I have to go through this each time I claim? Why can't you people provide a decent service? You are happy to collect premiums every month but when it comes to delivering, the client must chase you. Do you chase me for your premiums, ever?! I really thought your service would improve after my first ordeal but I guess the joke is on me. I've had it!