Shop It Today — Ordered for Olympus Voice Recorder through an offer but did not receive

Address:

Mysore, Karnataka

My Name is Narasimhan and I am from Mysore city. Yesterday, I got a call from their agent Mr. Pawan Mishra (His personal no. [protected]) and he said that as per the offer, I have to pay only the 12.5% tax which is Rs. 3998/- and shared companie's Axis bank account number through SMS. After I paid the above said amount and confirmed, he gave me another offer that if I will be in top 10 of their list, then I am eligible for i10 car or cash and I can confirm only if I am interested. I said I will check the offer and only then will confirm. But today morning one more person called me from their number: [protected] and said I am on the top 10 list and that I won a I10 car. Either I can go for it or get cash. I grew suspicious and when he asked me to confirm what I want, I told I want my audio recorder first only then will be able to commit for others. The agent got angry and tried to convince me. Later he said if I do not take the car offer, my previous offer get's canceled as well. I will not get any refund as well. I should get the refund or a product equivalent to the amount of Rs. 3998/- please help.