Winspark Innovation Learning Private Limited — Take 250 rupees from me and now they demand 1250 rupees

I applied for teaching in a school.So they call me and they tell me for one time pay 250 rupees by online transaction for form fillup.I pay 250 rupees.They told me no money will not demand from company in future .now they call me and tell me for pay 1250 rupees by online transaction for joining.But I am not pay this.I want refund my 250 rupees from this cheater and please take a legal step and confirm if they could not fraud with any human beings.please help me