Flipkart — I ordered on 2nd October but not shipped yet

Address:

Nandani parshuram near baraham sthan, Vidya niwas

I ordered one item in big billion day with great offer on 2nd October. They shown me to be delivered my order on 9th of October . But I didn't received. It was prepaid they they promised delivery date would be 16 oct but again till the date they didn't shipped. Then when I talked to customer care they are saying that there are some problem my team is working.
But not giving any proper reason for this.

I talked to customer care several time but they are ignoring my request

Now problem is the cost of order is updated to double of the amount they promised that time.

Now directly I can think they are cheating me. They wants me to cancel so that I ordered it again with higher cost

But I am not going to do this as they already did it for several item in big billion they

If they don't want to provide on promised cost why they are even offering this much discount in big billion they

They did this for multiple orders

For some order seller cancelled my order when reordered it in higher cost they send it without any issue. What I understand with it

For one order they sent me pack of 4 chocolate instead of 6 which I ordered and when I complained they told me to reorder it and return it. Now cost of chocolate increased by 50percent.

Now that's all they did with me
I wants this order should be delivered soon and either they refund me amount in today's cost so that I can reorder it.

I wants this to be refunded with current cost of item in case they cancel my item, or cancel it