Flipkart — Mobile replacement/refund

Address:	Prakasam, Andhra Pradesh, 523155
Website:	flipkart.com

Good afternoon sir
Order ID: OD[protected] from Flipkart
Item: Lenovo VIBE K5 NOTE Mobile
Issue: Second SIM slot is not detective SIM
I have ordered a mobile on 4/9/16 by paying Rs. 13499 through credit card.
I received the mobile on 8/9/16 around 1830 hrs. Immediately I noticed that second sim slot is not detecting sim while the same sim is detected in sim1. Immediately I placed REPLACEMENT within one hour . (Return ID:[protected]. Flipkart given a message that they will contact.

On 9th when I called my self only
they asked to install smart check and I followed as instructions, they
approved and informed me to wait. Then status changed to item will be
delivered by 19th September.

On 10th again I called back they asked to do smart check process and
informed me to wait until pick up of item.

On 12th morning again I called (during my call replacement request is
rejected) and asked when the pick up will be happen. Again they asked to
smart check process only without listening my experience. I did it & they
placed replacement request.(Return ID:[protected]

And afternoon of 12th When I called them for want of when they will
come for pick up, (during my call request is rejected) again they asked for
smart check process...
call is disconnected and request status shows that cancelled. Immediately I
requested refund, (Return ID:[protected] then from [protected] & [protected] called me
& confined from me and informed that refund request is accepted and it
will take some time to pick up & transfer of my amount.

On 14th September morning I called them and asked for pick up
status (during my call my refund request is rejected), then they told that
again request is placed (Return ID:[protected] before that they also asked for smart check
process... and call disconnected & refund status rejected.
Now they posted the alert as " Delay in delivery - Lenovo Vibe K5 Note (Gold, 32 GB).
We are sorry for the delay in delivery. Please bear with us while we are trying to deliver your order at the earliest."
Till today same status is lying.

They given a mail that it will be solved within 48 hours on 16/9/16. And emailed me that it will be solved by 19/9/16 around 11AM.

On my call to Flipkart
on 12/9/16 promised me that it will be cleared by 14/9/16.
on 14/9/16 promised that will be cleared by 16/9/16.
On 16/9/16 given assurance by 19/9/16 morning.
Today again I called them around 13.30 hrs they informed that wait for 24 to 48 hrs.
Kindly solve my problem either REPLACEMENT or refund.