when I receive my winning price of BP COCA COLA UK 2012

I have receive a text on the date of 25 sep 2012 on my mobile phone that my mobil no has won 10000000.00 RU coca cola UK 2012.I sent my all deatils by a massage.Then your agent call me and demand me RS 15500 for regestration charge.I sent above maney their account no 20116508210 Name Shitoli Sumi ifs coad SBI 0000072 positively. But they are anather demand me when RS 98000, when Rs 60000 for converasation charge. I have no maney I am very poor person. I leave in INDIA.I not uderstand the matter.What can I do? Please help me and salve my matter. I am very sad for this matter.Iweaght for your answer. Ather wise my coplan discus in all midea. MY Emil susantamaiti8@gmailcom my mobil no 08954016590.please try to understand my matter.please salve it.