false internet bill

Location/place: Hyderabad

Name of company/service: Reliance broad band services

I paid all bills and terminated my internet connection.I received termination letter also, but again they sent me internet bill and making phone calls to pay that bill. I already told them about that termination even though they did not respond.please help me. my subscriber ID.349465344812. of internet.my phone no.9959523747.my email [email protected].