She told her name was J.F. (not sure about the spelling of the last name) and she was process service and someone will subpoena by Wednesday at job or home
I didn't really need the name (thanks for your edit
). I wanted to know who the person represented.
So, someone who said they were a process server said you will be served with something on Wednesday regarding an old bank debt.
It is possible you could be served with a summons and complaint, indicating that you are being sued. If so, you will need to respond to the complaint. The statute of limitations could be a defense if it applies.
It is also possible that you received a call from a debt collection agency trying to get you to pay what they say you owe.
And it is possible that you received a call from someone trying to scam you.
I suggest you wait to see what happens. Do not take any additional calls from the person and do not provide the person with personal information and do not pay anything.
If served with a summons and complaint, you can seek legal assistance at that time.
Good luck.