Ginop Plumbing & Heating Inc.

I hired Ginop plumbing & Heating as I needed a new furnace at a property in northern Michigan I thought to have AC installed as well,(good selling point) They said THEY could do it Everything went well,quoted a price of $6,for both I paid it Two weeks after installation I receive an invoice from*** saying they did the ELECTRICAL hook up for the AC unit not disclosed to me in my conversation with Ginop$they are asking for (, plus late charges that are now accruing I called the township of cheyboygan Building Inspector to see if Ginop had a permit pulled or even had one at all*** Mechanical Inspector, checked while I was still on the line and said he didn't have a permitLong storey short,Ginoo was charged for a permit for $HVAC permit fee and expects me to pay that now I feel it was not disclosed to me another contractor would be involved, along with more charges.I wonder who else had a problem with this company