im scared!!!im being STALKED!!!!!!HELP ME!!!!

theres this gurl,bonkers1508,and she knows my name,and i didnt think that is a problem until she starts calling me her cuzin...creepy...and now she is stalking me bff alison,soccerkitty8,and now bonkers1508,is calling soccerkitty8 her bff!!!!!SCARY!!!!!!!!!STAFF PLZ HELP ME!