Spice Jet Airlines — unethical sales practices

I booked a flight through MakeMyTrip app for 9 people. Later got calls from Spicejet that company is giving me an offer to book seat, priority check in, meals, easy bag claim by paying 10044/-. No promotion discount informed. Later on follow up, company says that the discount was already given through MMT app. So why did the company call me up again and asked me to pay again for some service they had supposedly already given me via MMT portal! I want my Rs. 10044/- back and service reverted.