Oddest Emails You’ve Ever Seen

So my Walmart account was recently hacked, and I spent a good amount of time clearing up that mess, both with Walmart and my bank. However, on the same day, I started receiving hundreds of weird emails from about four different addresses: shanna2oh9@gmail.com, nathan2oh9@gmail.com, dezjoe2oh9@gmail.com, & jbag2oh9@gmail.com. The subject line and content are both the same: different prepositional phrases on each one. For example: “any networking walked to any networking” or “some gaiters jumped from some gaiters” No attachments or links or images at all. Does anyone know what the cause of this might be, or if I should take any sort of action? Thanks!