LG V VX-9800

is there a way to totally delete everything off my phone. i have ringtones on the phone that i used bitpim to get on it, but my usb wire broke and now i cannot access the phone since i dont have the wire through bitpim. i tried just going to options and deleting the ringtones on the phone but it doesnt. is there a way i could just totally delete everything by pressing a button on the phone. thanx in advance