OnAir Tv

Good Day. I did take DStv Explora from OnAir on 2024. Six Months left to finnish the contract one Consultant introduced me to new Contract of New DStv Explora Ultra claiming they will clear the remaining balance of the previous contract. Unfortunately they kept double debiting my Account. I cancelled the Contract, they then send the Courier to pick up their Decoder. I gave them back their Decoder. But they still harrass me. I send them several E-mails, called them many a time but they don't answer. Even on WhatsApp they only Promise consultant will get back to me but to no avail.