HeyDude order received that I didn't place

I received 4 pairs of shoes from HeyDude (or so it seems). There was no packing list of any kind inside the box. I have no recollection of placing an order, especially since I'm not familiar with this company. I posted to my socials to see if anyone sent me a gift but had no bites. It's especially strange because they are all my size. I double checked all my banking accounts and emails, but see nothing about HeyDude. I messaged customer service but they wouldn't help me unless I provided my email and phone number "for verification purposes", which I wasn't willing to do.Has anyone else experienced this? I'm so sketched out. Should I just enjoy my free shoes?