Apollo Pharmacy — To get cashback amount

Address:	Karwar, Karnataka
Website:	Apollo pharmacy

I'm from Karnataka. I went Apollo pharmacy near me in Karwar district. Here all the staffs are responding very humble and very kind. But whenever I went to Apollo pharmacy to buy some medicines by using my cashback amount they are asking for OTP . In other days and at that time also I'm getting all the messages from Apollo pharmacy except OTP. I enquired the staffs but they replied there is a network issue. But I'm facing this problem every time.
So my request is to find another way to get cashback amount to purchase medicines with that amount. I mean to say kindly find the one more way other then sending OTP.