Not sure if anyone else has posted this, i looked for about 20 minutes and didnt find it, anyways…
I remember when trying to pay by phone with Sallie Mae, it was a $ 15 fee. I tried Navient over the phone and made my payment wiithout a fee. Wish i knew this. Now, i will be paying over the phone and add an additional $ 150 to my spending…woo hoo!
You can also do SDG&E as well with a credit card online. Im in san diego california.
Hope this helps others and sorry if someone already posted it.