Fraudulent credit card chargeback by an attorney

Please help us with the proper management of the situation described below.
Our office uses PayPal for patients credit card processing. We process payments as services are rendered. About a couple of weeks ago, our doctors rendered services for a patient (an attorney) on Medicaid assistance who requested an elective cosmetic procedure done. He signed all the payment authorization documents and authorization for treatment. He paid for the treatment with American Express Business Card. He signed the PayPal slip after the treatment was completed.
Yesterday we received an email from the PayPal requesting a 24 hr dispute response and stating that the patient claimed that the credit card transaction was a processing error and that he never authorized the charge.
We have all the documents with the physical signatures including the photo ID and paper work upon completion of treatment with itemized services rendered.
Is this an abuse of authority and Esq position?
Are there any counter measures that we can implement against this individual and how do we protect ourselves from similar fraudulent chargebacks?
Thank you

Are there any counter measures that we can implement against this individual and how do we protect ourselves from similar fraudulent chargebacks?

Click to expand...

Usually, you can get pre-aprovals from CC companies when you are charging for an amount above $3K. Check with if that service is available to your company. As far as the charge back, send copies of all the documents to the CC company and they will have to deal with the problem customer. Chargebacks are usually issued because many people know that this is a way of buying time when it comes to the processing of over their limit transactions. Once they see that he authorized the charge, they will have to release the charge to you and deal with him. Hope this helps!