I used to work at a doctor's office, doing medical records in the front office. My given name's Annie, and there was a nurse that worked part time as an assistant for one of the doctors. Her name was Ann but some people called her Annie, too. So on the days she worked they'd call us Ann and Annie or Annie H. and Annie M. When paged for a call though, everyone used Ann or Annie so as to not get confused.
That is, everyone but the front office manager. She insisted on calling me Ann and the other woman Annie, despite both of us asking her to stop doing so because it caused confusion. She'd say it didn't matter, we should know who she was talking or referring to, though sometimes we didn't. Ann didn't mind being called Annie, neither of us minded if we were both called Annie, but I do mind being called Ann since it's not my name.
Anyway, on a day Ann was working, she was her usual cheerful self but was also saying she missed her hubby because he was away on business and wouldn't be home for another day. Over the intercom, B, the front office manager announced "Annie, back line park 9! Annie back line park 9!" (The back line was for personal incoming calls)
The conversation went as follows
Piratelvr: Hi, this is Annie, may I help you?
Caller: Hey, how would you like your husband to come home tonight? (Now my husband was scheduled to come home that evening so I was confused and thought it was a prank)
Piratelvr: I'd like that a lot, but I thought he already was? Who is this? pause on the other end
Caller: It's G (Ann's husband) Is this Annie H****? I start to laugh, realizing the mixup
Piratelvr: Oh sorry, no, it's the other Annie in the office! We both start laughing
G: Oh, Annie's told me about you! How are you?
Piratelvr: I'm fine, thanks! Hold on, I'll get your Annie for you!
Ann and I both laughed about it, and it was used as an example to B why she should make sure to clarify which one of us she was talking to. She did, when calling our names over the PA system, but aside from that, she continued to call me Ann long after Ann quit because she and G were moving to the Midwest.