TOY CAMRY 2008 SE mechanic placed a Scion engine in this car and it has a hizzing sound and ran hot twice is this normal?

Mechanic replaced engine and in two weeks it ran hot.He then replaced thermostat and radiator and then in two more weeks ran hot and no cooloant. Now he tells me blown head gasket. Before I left his shop the first time he said to bring it back at 1,000 miles. I towed it back after 928 miles and towed it back at 2300 miles. I personally think he knew something was wrong. Now hes out of town. Any suggestions?

His technicians informed me their work was out of its six months warranty and it was only 29 days. Also after speaking to owner he implied the fans never came on at All. This is the second time it over heated. Smells like something been brewing up after installation of engine. Thanks for your HELP. They appear uncooperative for the exception when it was time for me to pay them. Thanks again

Somebody should start a web site, something along the lines of Badgreasemonkey.com so everyone can post horror stories of these predatory shops! Then once they start losing tons of business, maybe they will smarten up.