Same here. Played a few hours on year eve,came back like 2 weeks later and got a ban. I have tried contacting battleye but that company is not responding. So theres nothing left to do,but to accept it. Havnt used any kind of cheat.
I just got a ban in DayZ,i think i played last time on New Years eve,and havn`t played since. Today i just saw that i have been baned. I didn`t used any cheats or other shits.