Uc Solutions — help me to get rid from this company's agreement and they are sending me message

This company is sending me message that case hase been registered against me, need help please? What should i fo? And how can i get rid off them? They are calling also and sending me also please reply asap.. I am really afraid for this what will happen as i never had anything related to this... What should i do and what is solution for this.. Please help