Commonwealth Bank experienced a system outage on Tuesday with customers unable to access their funds and causing glitches. Everything Geraldton user Simon sent in a warning urging Commonwealth Bank users to check their accounts.

"Withdrew some cash this morning from the ATM at the front of the branch in town and apparently the banks systems were playing up. I got home and was just going through my transaction history and the bank had logged a DOUBLE WITHDRAWAL at the SAME TIME from the SAME ATM!" he said.

"I promptly rang the service number and they could see the mistake and said the mistake will be corrected overnight. But at least it's sorted now. So IF there's money missing from your account then that's probably why."

If you have experience problems contact Commonwealth Bank.