Defogger problems of the 2006 Chrysler Sebring

I purchased my Sebring in may of 2007 & the rear window defogger contact keeps breaking off from the window and therefore doesn't heat the rear window for ice removal. I don't remember exactly when the first time it happened was but it was within the first year of purchase. It has been repaired 3 times by either solder or glue. This was covered under warranty. On the 3rd repair my rear window shattered on 12/24/10 (I might add it was snowing!). I contacted my insurance company & was advised to bring the car to a car repair facility (who my insurance company deals with) who specialized in the repairing of convertible tops. A new rear window was ordered & the replaced. Again! the contact has broken off from the window & again! I am left without a working rear window defogger! I find this to be a somewhat dangerous situation as convertible tops lack a full rear view & having no way of defogging my rear window leaves me at a disadvantage. The problem to me, seems to be that the electrical wiring from contact to window is too short & therefore breaks from the contact. I don't know if any other Sebring conv. Owners have this problem as I have not seen this on any problem reports but I can tell you this is very frustrating & I would love the Chrysler company to correct this problem. I don't feel I should go through my insurance company for the replacement of a new rear window as this is an inconvenience.