On Air TV agent ******* me into a ********** contract and immediately upon realizing it,I cancell...

On Air TV agent ******* me into a ********** contract and immediately upon realizing it,I cancelled the contract but (On Air TV ) tried to force me to continue with the contract and went as far as putting a bad credit report next to my name.Even though they have collected their device,I have not received a ( Cancellation Letter) from them and they still send me messages asking me to continue paying for the device that they have already collected.My credit score is now negatively affected because of On Air TV.