Reliance Fresh — offers shown but not giving

Address:

Ernakulam, Kerala, 686666

On 23rd i bought goods of 5991rs from reliance fresh. Thers an offer of buy 1get one free for atta noodles. I bought 3 nd didn't get one. Ystrdy i went nd complaint thn thy give one. If we forget about discount or offers we are easily get cheated. If we check the bill it's a long bill, we have to check very closely to understand each item. Its a long bill but only in short forms. Please do necessary