Probably the mailman sticking all of them in ypur box.I get several other people's junk mail they all have different addresses but always end up in my box
Un register the coupon book and it will get rid of it
I downloaded the app on my phone and then I stop getting the ads in the mail. Don't know if that is coming practice or just a fluke.
All I can tell you there is if any of the books are in your name all you have to do is contact them and tell them to cancel it as far as the others good luck
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