Same kind of thing happened to me in the 90's.
They accidentally deleted my email account and said too bad so sad.
I said let me talk to your supervisor please and I explained the situation to him and he said not to worry that he would get it all straightened out. Long story short, he got everything all put back the way it was.
So, call in again and ask to talk with a supervisor and hopefully all will be rectified.
Good luck.