Rain handed me over

we took rain about 3 years ago. after sooo many calls logged we still failed to have any signal. We moved house, signal was even worse. 0.00. I decided it is time for Fiber. Suddenly today I get a phone call from a attorney saying Rain handed me over. I did not sign any contract with you!!!!! You said it is month to month with not obligation. Get my name cleared or I will also take action. This is *******!!!!!!