I ordered * $*** vanilla mastercard giftcards online through walmart.com. I received th...

I ordered * $*** vanilla mastercard giftcards online through walmart.com. I received them in the mail, with an attached note telling me I had to activate them. I received an email from walmart with a link which would activate my giftcard. I clicked the link and it said it could take up to * hours to activate. ** hours later, the card did not work in any store I tried it in. When I looked online at vanillagift.com, it said my card number was invalid. Upon calling the number listed for vanilla mastercard giftcards and punching in my number, an automated message told me my number was invalid. I tried again on another number posted at vanillagift.com, and it told me that my card had expired and that I had $* on it.**I would like my cards to be activated with my $*** available. If that's impossible I'd like my money back.