1k POS: Control Arm replacement

Just got back from the CA replacement service, and I kind of having mix feeling about the whole thing...partly not on the actual replacement.

I brought the car in in spotless condition, but when the job's done it's dirty. I asked them to just rinse it, but they started to wipe down with some unknown cloth :/ I had to tell them to stop. Wheel wells are very dirty, which I ended up taking it to DIY high pressure the heck out of them. I also noticed the driver side inside silver trim handle have some scratches...they couldn't see but I am very picky so it bothers me. The passenger side tweeter piece (plastic cover) got some water on it and it doesn't seem to dry up (almost like water got it). I told them if the tweeter is blown they will have to replace it. The problem to me is: I bring in the car for them to service, not to mess it up.

Worst yet, I started driving the car home for like 5 min, and noticed the steering wheel is off center?! I had to drive back and have it fixed. I am surprised that the tech did not notice it, since it's like at least 5 degrees off!

Here a question to MY09 experts: I know there are lots of noises for our GT-R, but now I noticed there are some noises possibly from rear that resembling metal to metal clunking noise when going to small uneven roads...actual bumps are okay since the vibration feels more solid. It's the occasion hollow clunking noise that puzzles me. I don't know if it's my paranoid due to the not-so-satisfied experience... anyone can input? Does alignment on the rear required anything taken off? I called and asked but was told it's bolts that needed turn, so nothing was taken off.

Don't get me wrong, everyone was very polite about the whole thing and said if I want the tweeter piece and trim replaced, they will do it at no charge...but I just dislike having things taken apart...it just won't be the same afterward...sigh.

Now I will try clean up the car and check again if they screwed up anything cosmetically...sadly, there's a MY12 blue GT-R in the showroom and after this service I really have no desire to check it out...I feel like 'every time' the car goes in for service, it will spell trouble. The only way to do it right is to do it yourself. Sometimes, I wonder if I should just sell the car and get something cheap so I wouldn't have all these headache.