cheating

I see their advertisement in newspaper and i called them for buy medicine for sex problem. First they sent me medicine of amount rupees protected and they said all money is refundable if no effect. But i don't see any effect of that medicine. So i called them again and they said i need more medicine then they send me medicine of rupees protected. But same as before no effect so i called them again and they said this last medicine if i take i see protected% effect. So i agree and they send me third medicine parcel rupees of protected but in that parcel they sent me same medicine as they send in second parcel so i called them and i said about that then they said they send another parcel but i refused to accept that and i said i want my refund so they said we don't give you refund and do whatever you can do. In advertisement they said they send protected gb memory card but in all parcel I can't receive it. So i m complaining about they cheated me. Please help me to get my refund.