Navient illegally placed a returned payment towards my student loan account stating that there was insufficient funds in my checking account on XXXX XXXX, 2015. After contacting my bank, my financial institution verified that there was no XXXX transaction placed in the amount of {$250.00} towards my checking account from Navient. And now, I am receiving harassing calls stating that I have not made a valid payment towrd my student loan account. In which the the payment was made on XXXX XXXX, 2015, via the Navient online payment site.