Very dissappointed person

Good day I won a Facebook competition on 12 August. I have entered numerous competitions and if I am the winner they tag me or notify me via inbox messager. Logically how else will I know I have won if I am not notified.

I was searching for something on Facebook this week and then I came across a post that I had won a R500 wimpy voucher. I was surprised but also very excited. I immediately checked the comments on that post and noticed other winners were tagged with their name so they obviously knew they had won. I was not tagged at all therefore I had no idea I won. I immediately sent an email to the email address that was in the other winners tagged posts. Received an email reply congratulating me and that I have 14 days to claim my prize. A few mins later I received another email saying that the email was sent in error and the 14 days has lapsed for me to collect my prize. How on earth could I collect my prize if I was not notified. The person then told me they don't tag people. I then sent proof of the other winners that was tagged. How does this even make sense. They then told me I need to check back at the competition posts to see if I won to know that I won. How does that make logical sense. So now I forfeit my prize because I was not notified that I won.

This is very ********* and doesn't make logical sense at all.

Please help me understand what I am failing to logically understand.