Swiggy — Cheating by showing ads that extra 1 roll is provided

Address: bangalore

I have ordered 1 veg wrap from swiggy and at the time of ordering i was shown that there is buy 1 get 1 veg warp roll free, but it was delivered only 1 wrap roll and there was no 2nd wrap roll. when i contacted swiggy customer care with great difficulty -(it is difficult to reach them over phone and chat ) .they refused to help saying that i didnt apply the coupon for buy 1 get 1 free, when actually only one coupon for discount was shown .the bill has come to 198 rs (bill is insanely high) or single wrap roll that also with bad customer service happening repeatedly .this made me forced to report this incident here. i hope justice will be achieved in this forum