Flipkart — waltx trail 26 t mountain cycle order id od[protected]

I ordered a mtb from flipkat on 26th june and delivery date is 8th july. But i didn't get the product till date even product didn't shipped yet. Meanwhile my installment of the product is start and i pay for that and no one from flipakrt is not sincere about that. I log many complaint on flipkart but they close the case after some days. And the customer care representative always provide wrong information, and say higher authority will contact to you. I share 3 number with them 2 are fully functional but i didn't get a call from there side.
Please provide any solution asap.