LazyPay — Constant follow up for payment

I tried to book a hotel in kolhapur in first week of August. While booking an option of lazypay poped up. Not knowing about this organization I thought it's a hotel payment system. I never before delt with lazypay. I agreed booking. However after couple of hours I canceled booking. I forgot i booked and canceled hotel. After fortnight I started getting calls demanding Rs 1200/- odd . I denied and explained them fact. But almost dozens calls keeps on coming. Pls stop this as I never availed any service through you.