M & M Custom Car Audio

I wish I have read reviews before doing business. Got ripped off by their tint crew. Quoted me 3M ceramics but installed Llumar ATC... When confronted them, person at the front desk kept lying the 3M and Llumar are the same company and there is no difference between those two... Then told me that they have cameras that record audio. I asked him to replay our conversation, he said he can only do it if we go to court...WTF? Beware.