Consumer Redressal

Hi, I have got a mail with the name of Iphone contest, and it is stating that pay 333,699...to get Iphone 4S, 5S.., I paid 333 and 699 for two phones, the next day i have got a call from 080 - 67536400, he has told me that I am in Top 15 and to continue further in the contest i have to pay 9999 and will get a HCL Tablet and 1 watch as a complimentary gifts, I have received the products but HCL tablet is a illegal product as its serail number was not registered with HCL, when i have called to HCL Customer care, they are telling Serial Number was not registered and need Invoice, i have called 20 times to100 Best buy call centre, it is taking avg 5 minutes to connect and too much of noise as many people are sitting together like a fish market and dropped couple of mails, but there is no reply , finally decided to return and get replace, raised the request on 5th of June 2014, finally courier(Delhivery ) guy with the name Christopher came and picked the two products on 20th Jun