<prompt> Human: Cengage just gives me the run around when I call them and they dont reply to my emails. I have Navy Federal as my bank account, is there anyway I can undue the charge on my credit card?EDIT: The issue was resolved. I purchased cengage unlimited for a year on my personal email account. My school uses something called canvas to put out homework assignments. When I clicked on the homework assignments it would take me to cengage through the .edu email address the school gave me. I talked to my teacher and she talked to a cengage rep and had the unlimited switched from my personal email to the school email so i could do my homework.  <response>: How did you pay?If you paid via credit card, then call your credit card company to issue a chargeback. 