I am updating this thread to let you guys know that I had finally gotten in touch with Marcin. Although I'm still not happy it took so long to get a hold of him, I am happy that he has taken the opportunity to make things right with my exhaust. I should be getting the crookedness fixed this week. I just can't stand the exhaust rattling off the diffuser any more.
Truth be told, I'm glad someone finally picked up the phone at the shop because I really did like working with Marcin. He's extremely knowledgeable and doesn't b.s. you like some other shops. I had been struggling to find another place to do the work because most of the time they try selling you their "custom" jobs which I didn't ask for.