complaint against dealer & promoter of LYF Mobiles to change mobile

Dear Sir
i purchase a new mobile set from a shop in Dehradun by telling him to give a camera phone whose camera quality should be good. they shown me a set of phone brand name LYF by saying that this phone has a good camera as comparing to other branded phones i ask him about the camera quality they told me that the phone camera is 5 mega pixel camera both front & rear camera. on the same they ask me for my sim card to activate the phone i handed over my sim to him they cut it wrongly due to which the phone was not activated because of sim cutted wrongly as doing of this in between i checked the camera quality and found it is not that much of good i needed as comparing to other sets i refused him to purchase this set and ask him for another set but they do not change my set by saying that the phone was activated i told them how this will be activated if my sim was not working they told me to go and ask at the service center that the set was activeted or not or if the set was not activated we will change the set.
then we go to the service center of LYF where we meet to Mr Pawan they told me that the office was closed and they give me his number on next day i call him to ask about the activation of set they give me another number by which i have received an another number whic is of his call center toll free number there i called him to know about the activation of this set they told me that this set is not activeted
then i send my brother to the shop to change this set as per his wordings to change the set.
he go to the shop and ask the dealer to change the set the dealer send him to the promoter of that set that means to the promoter of LYF who is also availabe in his shop this promoter refused to change the set and using abusive language and told him that he will do whatever he wants but he will never changed the set also trying to beat him by capturing his coler when my brother told him to go with consumer form they refused his all apeeal
finally i decide to go with consumer foram and decide to take some serious action to stop this type of problems faced by the consumer and felling helpless.
you are kindly requested to take some serious action against such dealer and promoter of LYF Brand and help me to get another set of my choice and also the

Dealer Detail
Name -New Arora Traders
Address - 7/A, Chakrata Road Dehradun -248001 (Uttrakhand)
Contact No -0135-6051115
Bill No 911 Dated 28-4-2016
Model LYF FLAME
IMEI NO :- 869442021317759



Thanking You
Manoj Dhaundiyal
Contact No - 9997679038