CLICKING OKAY ON YOUR PHONE SCREEN WITHOUT GOING THROUGH IT

don't accept, click or select okay when pop up message appears on your screen without going through.read and understand every single word before you select your option. i did this mistake three days ago, i saw a pop up menu and i just clicked on okay without going through and see what it is then after selecting okay another option appeared telling me to dail in my Momo pin for the sake of MTN protection and so far as I don't know what it means i did exactly as it is and at end my GHC 3,500 in my account was gone. i called 100 to reach MTN to report the incident but they said i have been scammed.