That's a good question. Here's a basic list of alternative alt-coin options you can look into should your issues persist:

bittrex.com
poloniex.com
cryptopia.co.nz
c-cex.com
yobit.net

I encourage you to do more research into each of those exchanges on your own.

From that above list, I have personally only ever used Poloniex, C-cex and Bittrex. I will say that on all three of those exchanges, I have never had a single problem withdrawing money when I wanted. In most cases, the transactions showed up on my end practically instantly.

I will also warn that before making any deposits, it would be a good idea for you to spend some time watching the specific markets you are interested in move for a while on different exchanges to familiarize yourself with what volumes you would be able to easily liquidate (and on what exchange). Every exchange is different for different coins. You should always familiarize yourself with which exchange is doing the most volume on a particular coin to get a true idea of what prices should be before making any big moves (or going through the hassle of and paying any fees for depositing/withdrawing).