I broke my toilet flange and want to know where I could get a flange extension kit to make sure it is above the tile floor. I tried 3 wax rings this time and it was still low. When I tightened it to the floor I broke the flange.

You can add PVC spacer rings but I need to know how badly you broke the flange, any chance of a picture? I do not recommend 2 wax rings let alone 3, you got to add spacers to get the new flange just about flush with the surface of the new floor. This might be right up your alley. http://www.set-rite.com/

I broke my toilet flange and want to know where I could get a flange extension kit to make sure it is above the the tile floor. I tried 3 wax rings this time and it was still low. When I tightened it to the floor I broke the flange.

First repair that broken flange with a flange repair kit, (see image) then bring it up to the floor level with a set of flange extenders.(see image).

I like the extender but where do I buy one?

where do I get the Flange extender?

Most big box stores carry them. If not then a plumbing shop. Good luck, Tom