********** online purchase on credit

On the 2nd of February 2019 I discovered my credit card with Game had been **********ly used to make an online purchase, when I approached Game greenstone I was told to get an affidavit and bring supporting documentation, once the required documents where submitted was told the issue would be resolved within 36 working/business days... again on the 23rd of March I went to enquirer how far they were with the investigations as I can’t be paying off for a purchase/debt that I did not create I was then told that “head office/ ***** department” has not received my documents, documentation was resubmitted... it is now the 23 of April and I still have no feedback as to the documents have they been received? Any updates on the “investigation” has my issue been resolved??? Uv spent countless hours reaching out but no one bothers to give me any lucrative information....

How do you guys firstly approve online purchases without doing security checks? Ask for verification of some sort?