not sure who this is

They also call with the following numbers, like twice a day for the past two weeks:
415 422 5506
414 422 3536
415 422 5392
415 422 5507
415 422 5520
415 422 6072

Got hit with trojan horse, thought I cleaned it out of computer. Then had credit card numbers stolen after making purchase online. All kinds of fraudulent charges were made on my credit card-all from this area in San Francisco. Now this number is calling me. Beware!!

just received a call from this number.  didn't pick up.  caller hung up before voicemail recording.  called the number back and it sounded like my call was redirected to another number.  a person picked up on the other end but did not speak and later hung up.  this number is not for USF, as found on google (typo on USF brochure)

I have been getting calls from this number and other 415-422 numbers every few days around 7PM for over a month. Have not picked up and there is never a message.