Creditor call on a Saturday morning

I just received a call from a man asking to speak with a Misty [last name].

"Regarding...?" I asked the gentleman.

"Are you Misty?" he demanded. As if creditors intimidate me anymore.

"What is this regarding?" I countered.

"Student loan," he spit into the phone, "Are you Misty [my married last name]?"

"Misty [......] is a dead cat," I answered.

Silence, I think he's hung up.

He mumbles, "Student loan business. Call later."

Now I'm trying to figure out how my husband's grandmother's deceased cat was able to get a student loan and I can't afford to go to Grad School.