Have I ever identified myself as "Lisa"?

I'm asking for your help today. Not sure I'll get any feedback, but I'm asking anyway.

Here goes...

Have I ever talked to you and referred to myself as "Lisa"?

I used to answer the phone at my old job with, "Blah Blah Blah's Office, this is Rachel."

And I'd some times get "Hi, Lisa, this is Harry Larry" or "Hi, Lisa, this is Silly Sally" or "Hi Lisa, may I speak with Rachel?"

I thought maybe it was because of the name of the office I worked for.

BUT then today I ordered my lunch to go.

Me: "I'd like to place an order for pick up."
Lady on the phone: "Can I get your name?"
Me: "Rachel"

I get there and my order is under Lisa.

So now I'm seriously wondering if I have a second personality.  I'm serious, guys. I'm worried.  I'm doubting everything I've ever said.

Is there a Lisa inside of me? A Lisa that comes out only when I'm on the phone?