https coworking com - Not refunding my money

i have applied for data typing job and they asking me for *** rs. as a registration fees and at that time i ask them i will pay only *** not more than that anything and they say yes don't have to pay anything more that *** but when i received their invoice and later head in which they mentioned that for the further work you have to buy software which cost **** otherwise you won't be able to work. so, i tell them i need my *** back they say your money will refund within * to * days but after * to * days they are not picking up my call.