Complaint / Review
Wells Fargo Bank N.A
I paid off my student loan of 18,000$ early, for a year and a hald now they say I owe 400$

I paid off my student loan, last July. I got the exact payoff from them direct. Since than they have said that I still owe 400$. They are nasty, they lie and say they have no notes.in May of January, and May I sent them 60$, and than 100$, I spoke to the rep and we agreed I was done and the account would be satisfied as an agreement.
Well here I am, October of they still say, I owe them 400$, they are threating me, my father, and I am frusturated. I am also a New York City Fireifgter, who just received two stents in my heart. I am freaking out!!! I hope someone can help me!!!