I ordered a basic cleaning. It was $100 just for ...

I ordered a basic cleaning. It was $100 just for them to attach a giant vacuum to one of the ducts for 20 minutes to suck up the loose particles. As it was getting vacuumed they started with their sales pitch on a deeper cleaning. They quoted me $49 per vent and $299 to clean my HVAC unit. With 12 vents and taxes the total came to $1200 for my 1500 sq ft house. NO THANK YOU. I pretty much just paid $100 to get a sales pitch thrown at me.