Problems with VW Service

hello, I hope you can help me. we got our amarok in the middle april. proud like Oskar. after a short time we noticed that it runs into the loading area water. we know that it lies at the stylishbar which does not seem to be quite dense. vw this doesn’t know. the car was on 4 and 5 juni in the workshop so that it can be seen what it is. we picked up the car again, and waited until the parts are there. this was allegedly on 16.6 the case. we got it on 16 to z At 18.6. we had a rental car that we had to pay. since that time the amarok is standing with those in the workshop because the parts were not the right ones, and who want to give us half assembled reluctantly again. we have all the time, until now a rental car wants to have the vw paid. my question, is the right one? may vw that? because I have the feeling that from the front to the back ONLY DISCOVER