Bests & Worsts Reviews from Amazon

I bought this subscription to Readers Digest here at Amazon in January 2011 and didn't receive mt first issue until March 2011. Started getting renewal letters in with my magazine about 2 months ago and got to wondering when my subscription was ending? I looked here at Amazon and it says March 2013 which is correct then I looked at the label on my magazine and it says November 2012. What's going on here that is a 4 month difference in what I paid for and what I am actually receiving. So I contacted Amazon about this and they promptly shuffled me off to Readers Digest (Thanks Amazon)who gave me a song and dance story about how the May issue was a special issue and it was so much bigger that it counted as 2 issues. Well I pulled out my May issue and it has about 10 extra pages compared to the other issues. so shame on you Readers Digest for trying to rip off consumers and an even bigger shame on you Amazon for not standing behind what you are selling.