telling that call from law dept. and harassing me again and again

this is a group of scammers...............

Hi
How you are doing ? I just want to ask you about someone called me today around 2pm from this 713-693-5000 number and he was asking me to meet him tomorrow afternoon I wanna know whats going on

Said it FBI.

They called threatening to arrest me.... something with tax fraud. Incredibly rude and pushy and ended up hanging up on me when i told them i did not take out any loans or grants through my University