Scared Kidogo: I was Rude to a 'Big Person'

I'm not sure why the phones keep getting directed to my desk instead of the reception. So I've been having to run other errands like transferring the calls, giving messages etc, which has been a little annoying. I've stalked to the relevant people for some time now but it hasn't been fixed. So this morning the phone rings:
PKW: Yes?
Other: Eish, is that XYZ (the project manager)
PKW: No, it's PKW. Not sure why but the calls are coming here instead of other people's offices. Has been happening for some time
Other: Anti you people fix your phone
PKW: I don't work on phones
Other: But since it's your office...
PKW: I just don't like how I get distracted from my job all the time.
Other: Are you a staff of...? (It's a project with several partners, and at this point I figure out she is from the main partner)
PKW: No
Other: What's your name?
PKW: PKW
Other: And you work with which partner?
PKW: Let me tell XYZ to call you back, OK?
{I hang up}
Then tell XYZ to call his main office, realizing that I didn't even get the caller's name.
I'm now a little worried because I think it's the second highest office holder on XYZ's partner organization in UG. And knowing just how much 'Big People' are feared around here, hope I've not just made a big mess. I feel like not answering the phone for some time today.