Flipkart — boat aavante soundbar not delivered

Address:

PPC:plot no-EL.94 TTC Industrial Area, Mumbai City, Maharashtra, 400710

Flipkart is having worst service, service provider and customer support team ever i have seen.
I had ordered one product and there was delay in delivering the product and when i saw the status it was showing delivery delyed. Then i raised a complaint with customer support team, they asked me to wait for 2day will do the needful, but i didn't get any resolution from support team. I raised one more complaint on that same issue then i got call from flipkart backend team and they asked me to cancle the order.
Even i asked backend team to connect me with there senior team or escalation team, but they dinied to help me with that. This is how customer support team and the logistic team are behaving and acting with customers. I asked them to forward my concern to the higher level but they completely denied to help me on those issue.
Could anyone please let me know how can i forward my concern to the higher level of flipkart and let their higher level team knows how these frontend, backend and logistics teams and acting on customers issue.