Back in 2015 I decided to send my classic 2000 to TAG Heuer Customer Service (THCS) to get it refurbished. I sent it in via a local AD. At first, I had the hands and bezel replaced to go along with a quartz overhaul. They did a pretty good job and I was pleased with the results. However, the hands did not match the dial. So in 2016 I went back to the same AD and sent in the watch to have the dial replaced. When I got the watch back, it seemed good. However, within a day the crown failed. This is where things got dicey.
I went back to my AD and sent the watch back to THCS for a crown repair. After a period of 6 - 8 weeks, the watch came back but there were was an issue. The AD inspected the watch and found a smudge mark on the inside of the crystal. So they sent it back. After another 6 - 8 weeks, my watch came back with more issues. There was a deep scratch on the side of the case, and my "new" bezel was also scratched! To top it off, the smudge mark was still present on the inside of the crystal. The AD had their own watchmaker who did some work on the case and bezel to remove the scratches. They did this at no charge, and they did a pretty good job. But I was furious with THCS, but figured it wasn't worth sending my watch back again since I had done this several times already.
Later in 2016, my dad gifted me his Omega SMP. I found a local dealer that is an official Omega Service Centre for Western Canada that did a full service on my Omega, and they did excellent work. Turns out they later became an official TAG Heuer Service Centre as well! So when my classic 2000 needed a new battery a few years later, they swapped it out and also cleaned out the smudge mark on the inside of the crystal for free. The best part is they are local in my city and I can physically drop off/pick-up my watches from them. They also were able to get a new OEM bracelet for my 2000 at a very reasonable cost!
So my journey ended well. My 2000 looks good, and I found a great local service centre that does excellent work. I bought a pre-owned Breitling Colt GMT from them last year (they are a Breitling AD). But that's another story - look for that in the silver dial thread...