rockyrock wrote:I would try to contact the gas station first and if that didn't work call the issuer. It may be a genuine oversight or simple mistake.
Contacting the gas station is the first step. If you've somehow forgotten something and you legitimately owe it, then the credit card company doesn't need to be involved.
If they give no explanation but agree to reverse the charge, I'd still contact the credit card company anyway. The gas station could be scamming a lot of other people.
I don't know what the proper amount of time to allow them to reverse the charge is. It should not have gone from a pending to a posted charge.
I thought it might be an erroneous attempt to add CA state sales tax to the transaction, but $1.70 is 6.3% of $26.99. I think the minimum sales tax in CA is 7.5%.