Thomas Cook — birthday discount not honored

Address:

560043

I got a birthday message stating that rs.3000 discount on my travel on the birthday date, but it was not honored.
Tour chinese charm travelled on 12th may to 17th may 2018. I showed the message to the thomas cook branch in kammanahalli and they send the sreen shot to the thomascook office at mg road. But still no reply from any sourse.
My wife's birthday also on 15 th of may on tour date.