If i cancel a payment and they read me a disclosure saying the payment was canceled but they still take the payment from my account, can i sue?

I contacted my student loan company and told them I have to cancel my payment for a day and switch it to a later day as i am having financial troubles. they said it was fine and read me a disclosure that they have canceled that payment and will not take that payment until the date i switched it to. I looked in my account this morning and saw that they took the money out of my account and when i called them to explain to them what they did, they are acting as if they dont care and that it will be fixed in a few days. All of this was on a recorded line and they have the proof that the payment was canceled but now they are doing nothing to fix the situation even though a disclosure was read to me. I am beyone irritated and frustrated and just want to know if there is something i can do becuase of their incompetence