Reliance Trends — The billing staff overcharged us by not giving promised discount

Address: Reliance Trends, Vignan Nagar, Bangalore

I felt cheated after shopping at Reliance Trends, Vignan Nagar, Bangalore and I need an explanation from you on the same.

Date of Incident: 27th November, 22 (Sunday).
Store : Reliance Trends, Vignan Nagar, Bangalore

During my visit, the salesperson pointed out various offers such as Take 3 Track pants and get Rs. 300 off. Get two pairs of pants and get Rs. 300 off. Noticing the offer I bought extra items.
But, at the billing counter, the staff who billed did not provide us with any offers. The salesperson did insist the billing staff to provide us with the displayed discounts, but he was rudely ignored by the billing staff. Once the bill came, it was around Rs. 10, 000/-. On asking about the offers, he mentioned that it’s not applicable if our overall bill is above Rs. 8, 000/-, which was ridiculous.
Either, this should have been mentioned while you were promoting the offer or at the billing counter when we asked the staff multiple times before and during the billing. In the end, they gave me a cabin suitcase after paying an additional 600/-. I feel cheated, extremely dismayed with this experience and disappointed with Reliance Trends. This is a very unhealthy and sly way of conducting business by tricking the customers. Either you should have given proper communication or you should have mentioned that offers are applicable only if the overall bill is below Rs. 8000.
PFB the Tax Invoice number and marked the items which should have received the offer.
TNQ[protected]

I would like to get an explanation on why I was not provided the discount, and I do not want any more customers facing the same experience.
Please note, if I do not receive an explanation, I will be taking this further via social forums and other means.

Thanks and Regards,
Nitty Alex.