It’s even better with Amazon! If you have an item that does not arrive in the quoted delivery window (you have to be watchful as not every item will arrive in 2 days even with Prime) Amazon will reward you an extra month of Prime. It is not automatic and you have to ask for it. I’ve done this myself twice in the last year and received an extra 60 days before my Prime membership renewed. You can check out the page below and I suggest bookmarking it. Then when you need it, all the info is there and all you have to do is live chat. Be sure to have your order number handy.
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