I woke up with a creepy msg. in notes...

Hi, I am so confused. I just purchased an ipad air, and somehow there is someone able to type in my notes app, There was a really friggin freaky msg when i woke up?

It says in Notes: Hi how are you doing this Patty XXX (my last name) to whom am im talking to////// ??? MY NAME IS CHARLEY WHATS YOURS PATRICIA A XXXX (again last name) WHERE DO YOU LIVE IN A TREE I BET. how is this possible, I just purchased it?

Is there any way to obtain his IP address, because this **** will not happen again. Wouldn't this event show up in Diagnostics & Usage Data?

Any help would be greatly appreciated...

Best Regards,