motorcycle repair

Bike was running rough and stalling. Took it in. Man says it needs an ECU and O2 sensor. $750.00 for parts alone. I said, I can't afford now, I will come get it. He said I must trailer cause they were unhooked. He charged me for diagnostics. I trailer bike home and find tons of parts unbolted from my bike. I had to put the whole thing back together. I find the parts for hundreds less and install. The bike still runs like crap. I wouldn't ask this guy to screw in a lightbulb.