Home Service Guys Total SCAM - Do not use these folks Indiana

We bought a Groupon for $49 for the Home Service Guys cleaning Service.  My fiance stayed home that day to meet with with them.  To my surprise after they rescheduled once they actually did show up on time.  It was  acrew of one and required my fiance's help to move some of the heavy equipment, not very professional.

So, this is where it get's good.  They asked for another $150 because we havw a second duct return, totally fair, I missed that one.  We were MORE than happy to pay the $150.  They used a Square card reader and swiped my fiance's cc for said amount, $150.  Upon receivng our credit card bill they somehow charged us another $900 making it a $1050 charge!!  To make it worse, they provided falsified documents saying this was the correct amount and turned that in to our credit card company.  Completly fake documents!!  We even have the roginal invoice on their letter head that the technician and my fiance signed with the agreemtn and charge of $150.  We have a lot of options to go after these idiots but I wanted to personally warn people to to use them!  I have NEVER made a consumer report of any sorts and will do everyhting in my ability to warn people and get to the bottom of this SCAM.