Remember, A Genuine Consultant never demands for money or any Processing fees before the Visa and Appointment letter from the company.
You can go through the many consultants reviews like track2success/ Global Era / NM Job Buckets /Job Mantra all based in Delhi for a better understanding,

Hi Prakash, Thank you for comments...
How much you paid for radvision for their services?
Did you get job seeker visa OR work permit visa?
And how much salary they offered?
Please help me i am also planning for germany

Hi Friend,

Myself Prakash Rana I have also started the process with Radvision World. I got call from my counselor Tanya that time I was also confused I have to start the process or not Because I am also not from Delhi. But I have took risk for starting process I succesfully got my German Visa my job interview going on. I got offer from one employer waiting for the best offer. So I must say I have great experience with Radvision. Whatever they have committed with me they are doing same. So if you want to start the process you can

NO THIS IS LIAR CONSULTANCY. PLEASE DONOT TRUST THEM. THEY JUST MAKE FOOL OF OTHERS. DONT PAY ANYTHING TO THEM