I have had several repairs done by CFS in Jamesburg, and found them very helpful and fast.
They replaced a shutter in a 1DsMkii that I purchased used, without any hassle at all. They repaired a dropped 40D that lost autofocusing capability, a scratched antialiasing filter in a 5D in a very short time frame as I was leaving for Scotland, and other tasks.
I have had repairs done by Tamron as well, work was fine, but took 3 times as long door to door.
I am sorry for the OPs difficulties, but that has not been my experience, and like the 2nd poster, I am just a fellow with a camera.