Apple will never notify you in a text/email of a fraudulent charge. It is always the bank of the issued card that would approve/deny a purchase and Apple does not make that decision and not even involved in disputing a fraudulent charge on a card you use for Apple Pay. As always that is done through your credit card. Not even a bank would send you any such message.
A typical phishing scam is intended to scare you, so you make an ill-advised decision to call a number or click a link and provide the scammer your personal information. Never call a number or click a link from a text/email to provide personal information and you will not be a victim of a scam.
Recognize and avoid social engineering schemes including phishing messages, phony support calls, and other scams - Apple Support