M.S.
My daughter was 2 1/2 when we got her potty trained but she was at the same stage as yours she new what to do and how to do it but was just being stubborn. I tried one of those potty training in a day methods but it didn't work for us at all. I finally said that is it. We are done with pull-ups and we are not buying any more. We put her in underwear and plastic pants and we made sure she new that we were absolutely done with the pull-ups. We started on a Saturday and took her to the bathroom every 15 minutes and set the oven timer. Then on Sunday we went every 20 minutes and we made sure to give her a book or something to do while she was on the potty so she emptied her bladder. Then on Monday I had the daycare take her every 20-30 minutes. We kept this up until the accidents stopped and we would keep extending the time.
Another thing we did was a tinkle bag. In the bag we had games, coloring, play dough, etc. and if she kept her pants dry 3 times in a row between trips to the bathroom she got to do one activity out of the bag for 10 minutes with you. What was nice was she got to have your attention by doing something with you and you don't have to keep buying new things you just put it back in the tinkle bag and let her choose the next time.