Hack gone wrong

ok so the other day i was juss pla;ying some bf2 and this guy was killing me everytime i spawn but hes no were to be seen so sure enuf i see some rockets coming flying out of the wall that u cant go into so im like WTF and hes in first with 79 kills and 0 deaths so im like fk it imma get some hacks i got some old single player pice of sheet and i tryed it out sure enuf it doesnt work it gets detected so i go like fk this once again so i go to delet the lil fker and it says "access denied make sure the file isnt bein used by somone else ok the file isnt encrypted" i would relay appreciate some feedback and oppinyans(or however u spell that) on how to get this lil fker outta my comp
oh ya P.S: plz

that the wall walker stuff like i hate some time ppl stiking out wall like they are having sex with the wall its nothing new or it could be a instent spawn kill dip dip