mega millions PCH Said I won 3.5 million and a new Mercedes choice of color Internet

they called me and said I won .5 million dollars and a new mercedes car color of my choice. all i had to do as buy either 6 ebay or vanlla cards at walmart or doller store or walgreens. 6 cards at $200 each and when they diliver my car tomorrow, i should give them to the deliivery people. later he said no and that i had to call him with the number on the caeds.  they hav since called ever day many times and a few times in the middle of the night for 2 weeks. the sherriff said to block their numbers.on my home and cell. they even had my addess and email account. beware f these callers. especially elder people and others. then i so found a u tube video with the same voice of the man that called me and the same scam. telephone numer he used at first was 561-581-4684 and many others.