parent plus loan was given to me for no reason

okay so basically i already have grants that would pay for my summer sessions, but on my financial aid portal i also have a parent plus loan that i literally don’t need. they gave me the money so should i just pay it back or try and cancel it? is there a difference between the two? the office is closed until monday and i’m lowkey dying for an answer lol.. if this is a dumb question lmk guys