Rude customer service - Black Rain Ordnance Bolt Carrier Group (BCG), Left Handed

Hard to find a quality left hand BCG. I should've went with a rock river phosphate LH BCG but found the BRO BCG on a deep discount online. Rule of thumb, buy cheap you will end up buying twice. I had multiple failures with this BCG; FTF, FTE. Had multiple issues regardless of ammo, changing buffer spring and buffer, also had the armory at my range take a look. Was told the bolt seems to be the issue. The tightest of tolerances, difficult to move the bolt. Correspondence with BRO was simply rude. Sent the BCG back and their rep said "welcome to the world of gun ownership." Spoke to me like i have never used the AR platform. No refund, no apology, but a lot of "advice" on how to use my AR. Don't waste time or money with Black Rain Ordnance!