I recently joined a very large and important company (10,000 people) where I have a good friend. It is a dream job for me, since I wanted to work for this company for several years.
Since the company is very large, my friend works in a different department, but sometimes he has to deal with the people in my team (3 people, excluding my boss). After 4 weeks that I started, those 3 colleagues did not integrate me at all. I tried to talk to them, invite them for a coffee, but nothing. When they go somewhere they never invite me. Or they never talk to me. This makes things hard. Therefore I asked my friend, whenever was possible, to ask what do they think about me, and when he asked "how is the new guy?" they told him "we were a good team of 3, we did not need someone else but our boss insisted to have a 4th person without listening to us, so we will make the life of this guy hard, so that he leaves". I ignored them, but things got worse. After that they started to bad mouth about me in the department, saying I am not capable, I am very slow, that I made many mistakes, that I am very unpleasant (not true, none of them). In a meeting with 20 people, while I was presenting, they started to question my presentation, then to laugh in front of everybody about some theories, and I looked ridiculous in front of many people. Since they are in the company for 15 years, people around us started to believe them and they changed attitude towards me.
I am having hard times and I do not know what to do, or how to survive. Changing department is not possible, neither to talk to my boss and look like a spy. In another environment, a gentleman discussion (a fight) would have solved the situation, but we deal with work here. And I am 28 years old and they are 42, so we are not at the elementary school.
I do not know what to do. Any advice would be appreciated.