Blizzard ban of account for no reason

Hello
I bought the game about 10 days ago and was enjoyimg the game traveling to diffrent places doing quest and dungens but suddenly when i login today i realize my account is banned.

Your game account has been suspended due to the use of exploits, including unauthorized cheat programs (commonly known as hacks), in violation of our Blizzard End User License Agreement (EULA).

I was shocked cause i never used any cheat in the game and i dont know why they decide to ban me.
Why blizzard is ruining experience for new players?i never understand why they shloud ban for no reason?
Can anyone tell me wht i did wrong i just want to know why u get ban when u just doing simple quests in gameā€¦