On XXXX XXXX, I had a 42 minute conversation with XXXX XXXX about discrepancies I found with Loan Nos. XXXX and XXXX : ( 1 ) after making online payments to XXXX loans on the same date at the same time, the payments for XXXX and XXXX were not being posted on the date that the payment was made while the payment for XXXX was being posted on the date the online payment was made ; and ( 2 ) the interest rate was fluctuating on XXXX and XXXX but not on XXXX which was the same type of variable-rate loan with the same terms. The next day, I sent XXXX XXXX a detailed email regarding these discrepancies asking for his help. On XXXX XXXX, XXXX XXXX called to let me know XXXX XXXX had forwarded my email to him and he would help resolve my concerns. We spoke for XXXX minutes, and XXXX XXXX promised he would get back to me within the week with some answers. By XXXX XXXX, I had not heard back from XXXX XXXX, so I called him and left him a voice mail asking him to call me back. I have yet to hear from XXXX XXXX. In addition, I asked XXXX XXXX how I would know if the interest rate changed, in other words, what kind of notice would I receive. He told me I would have to check my statement each month ; no notice would be sent. I asked XXXX XXXX the same question, and he told me Navient would send a notice to me to let me know. I am not sure who is correct, but I never received any notice letting me know my interest rate was going to change.