I started the quest for the Dawnguards, freed Serena, then refused the vampire lord to change me. Â I returned to Fort Dawnguard and vampires were waiting and I contract vampirism, so once the vamps were dead, the Dawnguards started attacking me. Â I cured myself (because it was the disease, I hadnt turned) but they kept attackiing, so naturally I defended myself and killed all of them except the leader. Â I left and waited a few days and went back, but he keeps attacking me and he wont stop when I yield or anything; any ideas on how to get him to stop so that I can continue with the questline?