Who called from 6123310154

Also received phone call, and did not answer

Also got a call twice from this phone number: 612-331-0154 and caller ID gives the name "Khalid Hanem."
Any idea what this is about? 612 area code is from Minneapolis.

It is Great Lakes student loan collections.

I get this call to from Khalid Hanem. same number 612-331-0154.

Other number used to call me:
1 (608) 240-1257 Great Lake (Edu)
1 (605) 725-9201 Great Lake (Edu2)
1 (330) 262-1218 Great Lake (Edu3)
1 (612) 331-0154 great lakes (edu4)  

I have blocked them 4 times now and they keep switching phone numbers.  At some point here I should have enough evidence to prove harassment and I'll see my lawyer then.

Joe, you can't sue them for harassment. Great Lakes Education Services are not telemarketers, they are debt collectors for student loans.