Tusk Casino is bad

I received a R300 bonus.I played and it went up untill 500r then I played another game but the stripe where you must choose betting amount doesn't have plus and minus so that you can choose correct amount and it only flip till 12.I played and won over 3000r.Then after a while all my money dissapeared.I was told the max amount to bet is R10,but how it doesn't give you option to choose R10.There is just a stripe to swipe.This is so wrong.I feel ******.Never ever play this game