Coca cola didn't keep their promise...

I'm disappointed in Coca Cola too think I have been loyal too them...they ran a competition on facebook ..the Home view with friend and I was told I won by them via my DM but till now no one has called me and the final is on Sunday..this is wrong I will make sure that everyone knows about what they done too me I will never forgive Coca Cola you ruined my year you dont keep your promises..you have lost me as a customer and most in my family