Dell - Promised Offered Gift Not Given and expensive prices

I has purchased NEW INSPIRON **** DESKTOP from DCC RETAILS, Pune. I had an issue with Desktop Monitor Price mentioned in website *****, but actual price on store is only ****, even after I will investigate products details, many of product’s prices totally invalid on https://www.dell.com/en-in/shop/desktops-all-in-ones/new-inspiron-****-desktop/spd/inspiron-****-desktop/icc-d******win* link. Even they have promised to me that I will received gift "Get Lapcare Webcam LWC-*** HD worth ₹*,***" from site (Original price is approx. ****), but it’s totally fake and fraud now they are denied to giving me, because of Invalid IDD dealer. After that I have call to customer care, but she has been talking to me rudely without make any sense, that is totally frustrated things. All of the product’s prices in dell.com are expensive, even they are half of prices available on others sites or stores.