Cognizant Technology Solutions — money demanding

Address: S.Sreevarthi,chirala,prakasam district,AP, Prakasam, Andhra Pradesh

My name-sabbu sreevarthi, customer agreement no. T[protected],
On 10 october 2019, i received a call from nv technology and asked me to do a job that is click 150 links for 10 days and you will get 5rs per link, i agreed and after registration i came to know that it is fake, so i stopped working and now on 19 march 2020 one advocate sent a arbitration notice. Advocate name-nisar ahmed a shaik, surat, gujarat state, it look like black mailing me and threatening to making the payment, so please help me...