Balance it out
It might not look as weird as you think. Yes, a 55 years with a page that is only being viewed by 9 year olds seems weird. But, its a business page. The more fans you have the better you can potentially look. If you really want to have a social media page for your business than I wouldnt cancel it because of this. You can deny there friend request. 9 year old girls are probably willing to ad anyone because the more friends they have the more popular they will appear. Thats probably how you ran into this problem. You can always reach out to friends of yours on facebook and friend them. This way you can balance out having a nine year like your page while making it appear that you have a lot of fans.