coils replaced and a new computer

It took 2 business weeks and a weekend for this place to fix my car. Something simple turned into a nightmare. He replaced 4 coils and had to replace the computer. Supposedly the computer went bad when the coils went out, this should not have taken so long to repair. He purchased a "NEW" computer, it was bad so he had to go back (I'm assuming to the auto junk yard) and get another one. A NEW computer wouldn't be "bad" upon purchase. The computer programmer guy took forever to come, when he did come he couldn't do it, so he had to call another computer guy, then this guy didn't have the right programs when he came out the first time, so he had to leave and come back the next day and program it. I will NEVER go back and I advise you to never go either. He overbooks himself and tells you he will fix it and get it back to you the next day. It doesn't happen. This is a very unprofessional auto shop. There's cars ever where. They do not communicate with you about your car or call you back. I made countless BLANK trips to the shop because he would not answer his phone, call back or give me a call in the first place to find out the status of my car, just to find out it will be fixed "TOMORROW" - this went on for 11 DAYS. One of the mechanics wrote bitch on my back window (in the dirt with his finger). There was other car parts propped on my car. They play loud music, drink beer and talk. When it was finally fixed 11 days later my car had grease all over the steering wheel, gear stick, windows and doors, it was filthy. You would think after an auto shop took so long to fix the car, they would do something to make it right. At least refund a part of the $585 or wash your car. I will NEVER go back, EVER. I advise you to choose another mechanic.