Flipkart — Pros and delivered

I have ordered an item through flipkart and it was not delivered to me but in the app its saying it was delivered. It's a waste bin with I have ordered. The phone number linked to the account is [protected] and mail id is [protected]@gmail.com.

Also the registered mobile number is my old number. So I tried to change the number but its sending otp to that number and I don't have the number with. Flipkart should also take care of this issue