Flipkart — Delayed/Cancelled deliveries

Address:

Bhiwandi Pin - 421302

I ordered groceries from Flipkart. For the first 4 - 5 times it was all good. But after that they started delaying my order. Also cancelled one order without any explanation after delaying it for 6 - 7 days after the given delivery date.
They charge me ₹50 delivery fee even at a ₹1000 cart unless i have added atleast 2 expensive items that are being sold at a high price. It has been 14 days since I've been waiting for my current order and they are asking me to wait for 3 more days for any update.