Airport car drop off - parking scam

I went to drop my family member for a morning flight and had boot full of luggage. It took around 4 mins to fully unload them and sending them off and when I come out, I was told “sir only 3 mins free parking”, and the guy next to exit, charged me ₹60 for just around less than 10 mins that too on the driveways. Is this a new scam ? Because from this link it looks like I was scammed https://www.aai.aero/en/airports/passenger-info/coimbatore/Park-%26-Fly