Horlicks India — horlicks lite

Hii my name is arun dinkaran and i live in bangalore. I am 19 now... I am drinking horlicks lite from past 3 months... But recently i brought horlicks lite from my near by supermarket. It had the manufacturing date of 01/19. The horlicks lite tastes bitter. I don't know why. By the smell itself i can't drink it. I use nandhini good life has my milk and a good sugar which we also use for all purposes. My complaint what should i do now... If this case is to many people please make it sure. And can i return it back to the supermarket and take another in exchange.
Thank you
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