Vodacom took away my peace of mind 😢😢😭

I cancelled all my subscriptions and yet they still after my back sending me invoices and statements. I settled all my bills and asked them to cancel all my subscriptions and yet they keep harassing me I don’t want anything to do with them after what they did to me.please can anyone help me,I don’t know what to do anymore to get this company to stay far away from me I feel like they are ****mers and they **** poor people.