Someone in front of me throwing coins at the Everton match. A peice of broken bottle cam winging back in our direction. Told a steward and he said it'd be on camera and that was it!
The twat was still sat two rows in front of me last game.
The family stand should be a swear-free zone - people who go in there should accept that. The corporate areas bring in a lot of money - money that helps keep the rest of the ticket prices down. Lose the corporate money and you'll find the regular City fan will have to pay more for their tickets. So it's understandable that the club want to keep that lot sweet.
Doesn't mean that kicking someone out for a first time offence is fair though. There should be a yellow/red card system in force.
You get a verbal warning for the first minor offence (persistant standing/swearing) which is tagged against your seasoncard/citycard, then a yellow card and finally a red. A straight red for violence or throwingthings. Depending on what the red is for should determine your ban. Three games for swearing/persistant standing, one/two/three years/life for violence/throwing objects.
As far as this episode goes, I'd ring and try to make an appointment to speak to someone. Explain that you weren't given a warning and that you are sorry for your actions and will ensure that your future behaviour is more in line with what the club expects for that area. I'm sure they will be able to check on cctv if a steward came over to you prior to this happening. If, as you say, it was the first time you were spoken to, surely they should reconsider the ban.
Best of luck.