Sneaky people

I don't do sneaky. Not the kind that takes place at Christmas or for birthdays where the act of sneaking is to put a smile of pleasure on the recipients face. I am talking about the kind that takes place behind a person's back that is not done for the purpose of making a person smile. I have a new job and it is an okay job. Other than the fact that there are only 4 women (including myself I might add) in this office and out of this 4, two are very moody, the job has been going okay. Until today. Today I was brought two tickets that I had made keying errors on. Two tickets out of the probably 25 to 30 that I turned in. They were not huge errors and I appreciated being shown them as a reminder to myself that I need to slow down and watch my key strokes. What irritates me, no what pisses me off, is the fact that these two errors were given to my "supervisor" (who happens to be much younger than me) so she could point them out to me. And not just that, the errors were circled with black ink with WRONG written under it like I had just broke one of the Ten Commandments. There are only 4 of us for crying out loud in this office! And I have only been there for a 4 days! 4 FREAKIN DAYS!!! Surely, a few errors can be excused and brought to my personal attention, instead of being given to a supervisor like this has been an on going issue that I have been spoken to about and have failed to correct. Sneaky. Said person should have brought it over to me and let me know that this was an error on the tickets. I am still pissed. Am I wrong to feel this way? I am an adult. An adult I might add who worked for 9 years in the office of a multi-million dollar manufacturing company and for 2 of those years I was a supervisor. I am NOT a twenty something with no office experience. I resent being treated as such and I plan on speaking to my "supervisor" about it tomorrow. I probably need to calm down first or I will be fired.