No credit card required
Browse credit cards from a variety of issuers to see if there's a better card for you.
Back in 2007, did your loan company have the correct address on file? They may have sent it to your old address, but it is your responsibility to make sure they have your correct address on file.
Search this forum for "Good Will letter". There are many great examples, so I would try to send a good will letter and hope for the best, but removing student loan issues is a big uphill battle, and can be very difficult to do.