*****ulent activity on my Jet account

Bad experience with Total Sports Watercrest Mall where a *****ulent activity took place on my Jet account Now I would like to know TFG Foschini Group where are the safety measures here How does someone make a purchase on someone else's account without a store card How did the person assisting with this transaction allow this transaction thru without my permission and without my store card How safe are my account details with this company now 😡😡😡