You can cancel your Walmart Protection Plan within the first 30 days of purchase for a full refund. If you bought it in the store, you’ll need to return it to the store with your receipt. If you bought it online, sign in to your account and follow the prompts to cancel your account.  If you’re past the 30 days, you may still cancel it, but won’t receive a full refund. You must visit SquareTrade to cancel it.