Pathetic service

I have bought a new vehicle in 2020. I have started experiencing some starting problems in the mornings. There was a cloud of blue smoke in the mornings. I contacted the dealership immediately and was told to bring the vehicle in. On the first visit I was told that the vehicle was fine although I expressed my concern with a possible injector problem. The problem persisted and I contacted them for a second time. I was eventually told the car must stay overnight as they want to experience the cold start problem. After that the technician contacted me and I was assured all is fine, and they have added injector cleaner into the fuel system. Again the problem persisted. After a lot of to and from, I was told to bring the vehicle in for a third time. This time only a fuel sample was taken. Few days later I was told the sample was contaminated and that caused injector problems. It is however my problem, and not a warranty claim. I the problem was properly addressed on the first visit, the damaged injector/s could have been replaced under warranty. They have been dragging their feet to avoid going through the proses properly and avoiding a warranty claim, as the warranty period is almost over.