How can I find a complaint I bought some a block of Velveeta cheese and got home and it was not Velveeta it was the cheap cheese. Someone had switched out the real for the fake.

Take it back to Walmart for full refund

Call the store and see if they exchange it for what you what

Return back to that same Walmart with your receipt and item you purchased go to the return counter and show them the product you purchase is not the item that should be in the Box and let them know that their products on the Shelf might be tampered with

Call their corporate office, or you should be able to go to their website, check out the contact us.