I am an air conditioning tech with 42years experie...

I am an air conditioning tech with 42years experience in the field. The unit in my apartment is down . I called the office and offered to take a look at my own a/c . The manager told me to go ahead. I took a look at the machine and determined it to have a set of contactors sticking. I went to where the maintenance men were working and told them that I would replace the contactor if they would supply it. The maintenance man , Humberto, scalded me like I was a child in this care. I am a rent paying resident. I am not very happy with the Smart Mouth Humberto. Since there isn't a way to contact his Superior's. I will simply post this complaint.