Shocking after sales service

My car went in to Haval three weeks ago for a few things to be checked.... one being the rubber on my window which came off each time my window went up or down. They said it was a warranty item and that it was on order. I have made a note in my diary to call them every Thursday to find out what is happening as they just weren't getting back to me. After I escalated the warranty clerk to Dan the service manager, I was promised a call and that this would be sorted out asap but to date, not even a phone call. Please note that if this is not replaced in due course, the window gets damaged (as per their communication to me) yet still no one contacts me? Shocking after sales service