nikah conditions

Dear Sir,

My name is ……………………… my nikah was done 3 years back but still we are not doing rukhsati. I am not ready to accept this girl as my wife.Kindly tell me the procedure to get talaq to her I have to pay any amount for getting talaq. Because in nikah conditions it is clearly mentioned that if husband marries to another girl then he will have to pay 5 lakh to his wife or if husband give divorce to his wife and in condition of disunion husband will have to pay 10 thousand in every month as expense to his wife the all conditions are written without my knowledge and without my permission they cheated me . But here the problem is I haven’t met my wife once ever.I seems that her parents are blackmailing now just to get money, that’s why from last 3 years we are not doing rukhsati. Please give me advise