$100 +$25 payment processed on a prepaid visa $100 gift card, but no error or remaining balance?

[LyzzAnJo]

A client paid for services of $100 and added a $25 tip. He had a $100 gift card that was processed. The app processed the entire $125 on the $100 gift card. Now there is a dispute on the payment, it claims to come from the client but he states that he never disputed. 

I'd like to avoid this in the future. How does a client split the payment after the fact? Why did the register not do a lack of funds error? Is there a way I can avoid this whole mess in the future?

[_Violet]

Hi @LyzzAnJo - I'm sorry to hear that this issue has brought you to the Seller Community.

This does sound off, but it's difficult to pinpoint what happened without looking at your account and this transaction with you, which we aren't able to do via the Seller Community. For this type of issue, I suggest that you get in touch with our Support Team. If you haven't already, please reach out to Support directly by logging into your Square account and heading here.