Delay.

Flight JE151 01/03/18. Was informed during my check in that there was no delay in my flight. Went to the boarding gate on time, no one there... had to walk through the whole airport looking for someone of the Mango staff to help me, no one in sight. Checked on the internet and saw we were delayed. Arrived an hour and 45 minutes late in CPT. I would love to know the reason for this?? Why was I misinformed with check in?? Why did we not get sufficient information on time??