Flipkart — Not accepting replacement/return to the defective product

Dear sir,
My name is Tarun Kumar Meena. I ordered a smartwatch from Flipkart. There is connectivity issue in the product so i raise my complaint on the same day of delivery. They send the technician to check the problem, then the technician also accept that there is problem in the watch and he write in the remarks that the watch is not working properly. Then again I raise my complaint, then also they send the technician and again they declined my returning request after technician accept the problem. Same process they did 4 times. I am continuously in touch with the customer care but they are not resolving my problem.
Please solve my problem.
Order id- OD[protected]
Mobile no.- [protected]
Email id - [protected]@gmail.com