Can somebody tell me what regulates or governs transactions between a merchant and a credit card company?

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In my experience the credit card company sets the rules and the merchant accepts them. If you’ve tried to work out your disagreement with the credit card company but couldn’t reach resolution you should turn to whoever is named in an arbitration clause if one is present in your contract. I doubt that an attorney general is going to be interested in your dispute unless it involves fraud or other criminal activity.

What does your company attorney say about this?

It depends on what the nature of the complaint is. If it is bad service, as a business you have little recourse. If it is because they are in violation of some regulation or law, then it depends on what the violation is.

The first thing to look at would be the US Atny Gnrl, as almost all cc transactions are over wire, so we are talking federal wire transaction laws and regulations. Yes, there also maybe items involved in state laws and regulations of the state you operate in, so you might consider talking to the state Atty Gnrl.

Again, without knowing more details of the nature of your complaint it is hard to say. If you were a consumer, I’d automatically suggest contacting your state’s department of consumer affairs. But as you are a merchant with a problem with your cc provider, it is much more difficult and depends on the problem.

Good luck