flywheel

I've tried to get the installer to fix it ,to no avail. he came to my house 3 months ago and said the sound was coming from the front of the motor but needed to research it for more info on the enternet and now won't answer his phone, answers but lays it down and won't talk. never returns my calls. i figured he's a big butt head and really don't want him touching anything else to mess up.( a former gm tech my fffffff but is all i'm saying who needs him.) there are a lot of real fair and good machanics out there.