WTH?????!!!!

So I just finish helping an elderly lady locate her son's phone number by looking up her billing history and seeing repeating numbers that called her frequently. I pull up the number & call him to inform him that his mother has been trying to call him, but she lost the paper with his information on it. She has been stranded at the mall for HOURS, and she was worried that her son was worried about her. Do you know what he says to me? "how did you get my number?". As if I was bothering him! Sorry, I could have told your mother that she was shit outta luck, and we couldn't do anything for her. Could have left her stranded in the mall & had the police call you with the same information. Don't get an attitude with me when I'm just trying to make your mom happy?! I swear, I try to do a good deed, and get no respect....