Do you have a charge on your card from Walmart.com?
You may see a pending or temporary authorization on your credit card account if any of the following are true:
This pending charge is an initial hold that temporarily lowers your available balance.
If you choose the Cash payment method for in-store payments, and pay for your order using a credit or debit card, your card is billed immediately. There is no authorization hold or pending status for "Cash" orders.
At any time if you think your account has been compromised, please contact customer service.