Amazon Sent me 4 bottles of out-of-date vitamins

I ordered 4 bottles of Puritan's Pride Cranberry Tablets from Amazon on 2/28/20.  My main purpose in using this product is my tendency to get urinary tract infections. For the past ten (10) years using cranberry tablets ordered directly from Puritan's Pride, I have NEVER had another infection. 

Since I already had one bottle on hand (from Puritan's Pride) and was finishing it up, I didn't open the Amazon bottle until 4/2/20.  On 4/6/20, I got a bladder infection which, as I mentioned above, has not happened since I started taking cranberry tabs over 10 years ago.  I then looked at the expiration date on the bottle from Amazon - it's listed as 2/20/20.  So, I ordered the product on 2/28/20 and it was out-of-date as of 2/20/20. 

I read reviews online about out-of-date vitamins which stated that these products lose potency, especially when the expiration date has come and gone.  I then went to Walmart to get a fresh bottle of cranberry tabs - the expiration date on the Walmart product was in 2023.  And when ordering directly from Puritan's Pride, their products have always been as fresh as Walmart's products. 

I was shocked to see that Amazon would be so unethical in their dealings with their customers.