Inadequate ***** handling

I had numerous unauthorized deductions for online purchases that I never made. I came in contact with the ***** department of FNB and much to my dismay they stated that due to the fact that I have the card it implies that I made the purchases from a company call wish.com which is factually incorrect. FNB did not inform me of these international purchases nor sought authentication for the said transactions. They selected a few of the transactions to refund me but omitted a large number which leaves me in a position of loss due to inadequate authentication and ***** handling processes.