Why does FNB take so long to reverse ********** transactions?!!

Dear FNB

I logged a ***** claim on Sunday as an unauthorized amount had gone off my Cheque Account. It still showed as 'Pending' and I logged a ***** claim as soon as I had seen the notification. The transaction has now gone through and no longer shows as pending. I still have not been contacted regarding my ***** report, despite calling numerous times. Apparently, this takes 7-14 working days!!!

I do not understand why this would take so long and why the transaction could not be reversed while it was still pending after I had alerted you. I have even had to cancel my card and order a new one. Yet the transaction has still not been reversed. I do not see why I need to be inconvenienced considering that I acted promptly and reported it immediately.