Telkom = frustration

Ive struggled since March 2019 to upgrade my ADSL line speed from a 10meg to 20meg line. After numerous calls and a lot of frustration this was eventually completed by the 08 June 2019, date confirmed by opensurf. With my latest invoice telkom states that i owe them more than R2000, and it doesnt matter who you phone to resolve the issue you just get telkom employees with bad attitudes that keep redirecting you. What is happening to you telkom