DSTV unwanted Disney+

I received this message on Saturday claiming a service I have never requested has been activated. I went online and a consultant claimed to have removed the connection. But today I received the same message. I understand tge service is free for three months and then they start charging you by adding the charge to your existing debit order. I want DSTV to remove the connection with this unwanted service once and for all and to stop harassing me.

Disney+ Monthly plan has been activated on your account linked to mobile number - 82•••••••• Start watching on - https://www.apps.disneyplus.com/ml?t=EtxgHjJgTqiBxlF8