Vishal Mega Mart — Coupon not updated

I have done the shopping in Karnataka shamraj pet branch on 8.02.23, on that I billed 2800 rupees and I got the coupon of 300 rupees and to redeem next shopping and they said that it will be get the sms on next day but it's not received and I called to customer care they suggested to visit any branch of vishal mart to redeem so I visited at attapur branch in Hyderabad and done the shopping of 2500 rupees after done the billing and told it's not updated the coupon so he cont redeem (sandeep store manager id:[protected]) and ask to do next time shopping then also need to buy 2000 worth shopping to redeem the same.

Please clear the issue immediately.