Flipkart — Order no. od[protected]

Address:

Kolkata, West Bengal, 700031

On 5 august night i have booked lenovo vive k5 note on special launch offer.. (extra 2000 rs off on exchange and and 10% discount through sbi card). while booking the booking the order, i have gone through the below steps as per flipkart mobile app.
1st - i have selected the product (lenovo vice k5 note) price 13499/-
2nd - i have clicked on the exchange.
3rd - my mobile imei automatically detected and i was offered an discount of rs.2700/- for my old mobile. i have accepted the offer and proceed for payment through sbi card and all done.

On 7th august delivery executive came for collection of old mobile in exchange of new one. that time he discovered anamoly in the model name of old device. my old mobile model is karbonn titanium octane where as at the time of placing the order, mobile app auto detected my mobile as karbonn titanium s4 which is actually lower version of my existing model. though s4 is a lower model, i have proceed with the order evaluating the attractive discount offer.

Delivery boy refused the delivery stating that model number mismatch. whereas auto detected mobile imei number was matching with my original phone. executive told me to contact customer and rectify the model number.
Immediately i have informed the mater to flipkart and sr. customer care executive acknowledged the system error and told the they will rectify the issue and deliver the new product by 8th august morning.

I have waited for full day and in evening called customer care to know the shipment status and got surprised to know that order got cancelled stating reason "customer rejected the delivery" i insisted to talk to senior executive and accordingly sr. executive confirmed that they can't help in this as order got cancelled. it is only flipkarts app technical issue and negligence for which all miscommunication happened. the phone i got @9700/- (on offer) is today costing rs.13000/-. this order cancelled by flipkart on their own without taking my concent.
Please help to get the phone delivered with reinitiating the order mentioned in the subject.

Looking for your kind cooperation to get compensation against this financial loss happened because of flipkart.