MTN & Rewardsco

Good day, I have been trying to ignore it and let it pass. But it’s really frustrating and irritating, I can’t be getting calls from MTN and Rewardsco asking me about the deals I DON’T want. I have told Rewardsco consultants to kindly STOP calling as I know the contract is coming to an end and should I want anything I will personally ask for it. Now every single week I must expect calls from MTN and Rewardsco, like I owe them. I don’t and now regret why open a contract with them from the beginning