general problems of the 2009 BMW 328

I took my car into eastbay BMW for a lightbulb change (a tail/brakelight) and the technician noticed the housing of the taillight is melting on both sides, not just the one that needed a light bulb change. He mentioned it was part of a recall and then the representative said, that my car wasn't included in the recall. BMW has stated that it probably isn't the light bulb and that even though this isn't something that I have caused, that they are not responsible. They agreed that this is a faulty part, but is not covered under any recall or warranty. BMW offered to pay half the repairs which my responsibility is $475, which seems like they are admitting some fault in the matter. I have called BMW customer relations and the representative jackie said she isn't willing to escalate the issue because she knows it won't go anywhere. In addition, I did some research and there were over 241,000 BMW's recalled for this same reason that the cars were older than mine and out of warranty. Since this is occurring on both sides and not just one, it seems that part, the electrical receptical is producing too much heat on both sides and therefore melting the taillight which is a major safety issue and should be considered part of another recall & therefore fixed at no cost to the consumer. Thank you.