Datalink Infotype — help needed they are frauds...

Datalink infotype are fraud
I was searching for online work then i got one of the online work in datalink infotype and a person called me and asked me for i'd and received digital signature from me, i got started with my work and some what i felt like it's fake because they asked me to fill the 2200 forms within 20 days and in case if i don't complete my work within that period then i need to pay them 5500 rupees so i thought of going through reviews about that company then i found that the company is totally fake so i gave up working for that company and now they are calling me and harassing me like anything. I'm facing mental torture from them day by day so i kindly request you sir to consider this complaint and please take an action so that they should not cheat innocent lives any more... It's my humble request to you sir.