Customer Care is a Sad Story at Telkom Home and Business

I have had it with Telkom.

I cancelled my wifi in April of 2019 already and still they send me invoices. After a dept collector contacted me I explained to them that I have cancelled the subscription but are being sent from Customer Care to Cancellation dept to Sales dept, it is ridiculous what poor assistance you get form them. It seems that no one knows what the other one is doing.