so today i was play Modern Warfare 2 on Xbox and i joined a already playing match and when i shot someone i leveled up to 70 instantly and when it ended he set me to prestige 4 level 70 and said your going to have to pay for that i was how much 10 bucks PayPal but should i pay or just block communications and report him or can he hack me or DeRank me and i looked it up its a XP Lobby so can someone help please!!