Multiple repairs caused by service department

Horrific experience - horrible customer service. If you like your car and sanity, I would recommend NOT purchasing a vehicle or servicing your vehicle here. In October 2014 we purchased a brand new 2015 GMC Sierra 3500 with less than 120 miles on it - upon delivery of the truck we noticed a few issues that required repair. It is now March 30th, 2015 and the truck is still at their service department because every time they fix one issue, they create more issues; including but not limited to having to pull off all four doors and repaint them because they damaged the paint. We have had to hire an attorney and contact General Motors corporate office just to get someone from the dealership or service department to give us an update.