Sangeetha Mobiles — paytm offer not explained properly

This is to bring to your notice that we purchased iphone 7 on 25th of november 2018 at the sangeetha outlet at Doddbommasandra. your executive available there named Sayed explained us that there is paytm cashback of 8000rs when buy the phone by swiping for 40000rs. he just told us that the 8000rs would be divided like 60% for shopping 20% for paying bills and 20% for movie vouchers and told us that we would get vouchers. what he did not explain us is how it actually works so once we got the cashback we got vouchers and when we tried purchasing from paytm it is asking us to make a order of minimum value 1500rs where as the voucher they provided is 750rs only and that too it is not directly reedemed. first we need to make payment of 1500rs minimum value from our card and then they will put the cash back into paytm wallet which needs to be spent again so please let us know what is the point in having such offer where we need to buy from our money and then they give us some 750rs. your executive available gave us incomplete information and has fooled us. no proper solution has been provided till now.