GM MAF Question/Concern

[Project2G]

F**K.. So I just got off the phone with them and they said they would have to recharge me to redo it. I was like what kind of customer service is that and they told me they are short on time. Also stating they would have to charge me $500 to redo my ic piping. That is F-ing BS! They took my $80 and basically did an incorrect instal. So tomorrow I'm going back with my car and speaking with the shop owner because I am pretty pissed right now. I figured they knew what they were doing because there tuner is a big dsm guy. Sucks for me today was his off day which I had thought in the beginning he was going to be doing the instal.