Dell - Dell Inspiron 7306

I bought a Dell Inspiron **** *in* on ** July, **** from Delhi. The laptop was faulty from the very beginning. I reported the problem to Dell Tech. support and got a call back from them on ** Aug. After a lot of investigation via 'remote control' mode they initiated the Whole unit replacement process. On **th Aug. I got an email from Mr. Vimal Panwar telling me as the case owner. From that time, whatever Dell support is doing is highly suspicious and unprofessional. They are providing me wrong/fabricated information and trying to confuse me. For example, they told me that they want to replace my **** with a ****. But in the specification of ****, they provided me with the details of ****. I did not know these things at that time, and when that person called me, I asked him about the difference between **** and ****. He told me that there is no difference and requested to give agreement to suggestions he is making. When I replied over email and requested for the detail difference between **** and ****, I got some information after * days. Following those when I checked from Dell's website, I came to know that the **** is a **th generation laptop whereas the one that I have, **** is a **th generation. But this person, in his first email wrote that it is the **th generation. Not only that, even over the telephonic conversation he told me that there is no difference between **** and ****.