Exa Technology — i am getting text that i have to pay rupees 9000 as penalty for not completing my work

Address:	Don't have the exact address, 800008
Website:	www.consumercomplaints.in/exa-technology-fraud-contract-c2249734

I got a call from exa technology company for job i agreed but after the day they called i asked if they have any legal authority about their company or job but they said that if i don't want to do job then i can drop it. They said me to signout from their site i do the same but after 15 days they are just sending me text messages to fulfill the penalty amount
Why should i pay that amount because i have already dropped it. When i searched their site on google it only show exa technology fraud company their are more than 100+ reviews about that company that the company is fake.