Product not delivered after the payment

As i ordered VU protected inch LED Smart TV on protected-protected in flipkart online shopping mart as prepaid payment .they assured the material delivery date will be by protected-protected but still i didn't received the product and any update or any proper response from flipkart regarding the delivery. at the time of my purchase the product amount was protected,protected/- but now it was changed to protected,protected/- if i cancel and replace the order i want to make protected/-extra.it can't be possible from my side.so kindly i need a resolution for this delay.