Good Afternoon, I previously had XXXX loans with Sallie Mae. XXXX stafford loan for undergraduate study ( approx. {$1000.00} ) and XXXX XXXX degree smart loans ( approx $ XXXX ). Sallie Mae sold off my stafford loan to a company called XXXX. Back in XXXX 2015 I decided to consoldate the loans through XXXX XXXX and payoff the XXXX XXXX loan. After XXXX was paid in full, on XXXX XXXX 2015 my spouse intiated a wire transfer to pay off the XXXX Sallie Mae student loans using Sallie Mae provided information over the phone. Sallie Mae 's account information and address were confirmed and the wire transfer went through. 
A few days later it was discovered that I had a positive credit of {$13000.00} in my stafford loan with XXXX which was previously at a zero balance. I called Sallie Mae with XXXX XXXX on the line and they again confirmed that all information for the wire transfer was accurate, however, through an internal problem between the XXXX companies, XXXX received the funds. 
Sallie Mae is denying all responsibility and XXXX has refused to return the funds. I have been receiving threatening calls and emails from Sallie Mae demanding payment on a loan that was paid 2 months ago, and continue to incur late fees and interest on my account. I am in the process of disputing the loans with XXXX, XXXX, and XXXX. 
Sallie Mae continues to state that they have nothing to do with XXXX, however, my stafford loan has an identical account number to my smart loans and they use the same call center ; when I called Sallie Mae with a Senior XXXX XXXX representative we were transferred to XXXX. 
Any assistance would be much appreciated. I have documentation from XXXX XXXX with payoff information including Sallie Mae as the payee, Sallie Mae address, and trace number.