Business ProfileforInfiniti of Nashua

Purchased a car from them on 5/18/24. Went in with my own financing but she explained to get the internet price you have to finance through Infiniti. Which I agreed to. Paperwork was done on a tablet then the transferred to a computer for me sign stating they were having trouble with the tablet (weird I know). I asked gap and the 6 year bumper to bumper coverage (that's it) that's all that is shown on my paperwork that I signed that day. Fast forward two weeks and they mailed me my registration check which shows a different price than agreed upon stating that they added paint and interior protection for $1299. this was never agreed upon and was not mentioned at any point they basically snuck it in between passing the tablet back and having me sign. When I called to ask about it she said they add it to all their new cars but this was cpo (used) and the original buyer probably already paid for it if this is the case as the vehicle came from there in the first place. That to me is double dipping. I've bought my fair share of cars both new and used and expect dealer add on with a new vehicle but have never had them include add on with a used car. They're also typically shown on the sticker price this was not the case and was not the agreed upon price. I feel that when I decided to leave because they wouldn't give me what I wanted In trade that they decided to make up some the difference by sneaking this "add on" in after the fact. I've also had the vehicle looked at and been told that it doesn't even have paint protection on it. I've included photos but please keep in mind he showed me all the figures on a tablet then input it into a computer and asked me to sign on a pad claiming the tablet wasn't working but why even use it if that was the case and it seemed to work fine up to that point. I keep getting an error when trying to upload my photos. I'll try again but if they're not included please reach out so I can email them.