I have a waxing problem?

I have recently for the first time wax my arms because I think they were a little to hairy so I thought I would give it a go and I loved the end result. BUT, I used an epilator (which I bought 10 yrs ago but rarely use) and a couple days later I noticed on my arms hair growing. It seems when the epilator pulls the hair some hair breaks at the skin. Initially my arms felt smooth for the first couple days then it started felling prickly. This didn't happen with all the hair but maybe a quarter of my arm. I've also started noticing that I'm getting ingrown hairs so I have to get my tweezers and break the skin a little to let the hair come out. I'm thinking of useing wax strips next time but will this happen again, did this happen because I used an epilator and I'm also thinking maybe if my epilator is too old and I got a new one would it do the same. How should I wax so the hair doesn't break at the skin and I don't get ingrown hairs.