Karthis E-commerce Pvt Ltd. — Getting Messages from Karthis E-Commerce Pvt Ltd. where I did not take any loan from them

I’m getting random SMSs from this so-called company Karthis E-Commerce Pvt Ltd. They are threatening and harassing me to pay the amount. which I haven’t received any money as such. Please help me out from this disturbance I’m getting messages that they will call up my contacts and family members. Also, they are mentioning different loan provider names each and every time, like GoodRupee, CashCredit, ...