New Game: Restaurant Or IKEA Product?

I work in a library. This same patron calls frequently and often makes requests just like this one.

Caller: “Yeah, can you give me the number for [mumbles] suhnnfnia?”

Me: “I’m sorry, the number for what?”

Caller: *Impatient* “Sahnnthia! Can you give me the number?!”

Me: “I’m sorry, suh…? Sah..?”

Caller: *Yelling* “SEHNNFVIA! I NEED THE NUMBER!”

Me: “I’m sorry, I don’t know what that is. Is that a person? A store?”

Caller: “IT’S A RESTAURANT! I NEED THE NUMBER!”

Me: “I’m not familiar with that restaurant; can you spell it? Or can you tell me anything else about it?”

Caller: “NO. I DON’T KNOW! It’s a RESTAURANT! I need the NUMBER!”

Me: “I don’t know a restaurant by that name, so I can’t look that up.”

Caller: “Then ASK SOMEONE! It’s a RESTAURANT! It’s by [Other Restaurant].”

I check Google Maps.

Me: “By [Other Restaurant]? I see [Restaurant #3] near [Other Restaurant]? Or [Restaurant #4]?

Caller: “NO! It’s SNEHNNIA! It’s by [OTHER RESTAURANT]!”

Me: “I don’t see anything similar to that name by [Other Restaurant].”

Caller: “Oh, my God, why can’t you just… For God’s sake!” *Click*