Very bad service from Telkom

Good day. In January 2019 I change my debit order date to the 25th, so my salary gets paid in on the day but telkom transaction ran before monies was placed into my account. Immediately Telkom lodges a default against me. I paid the amount on the 27th with the right reference number but from my savings account. They do not pick it up. So I go to the store to change my debit order date back to the the 29th to prevent another embarrassment. Five months later my Telkom App shows no default as per every month for the past 15 months but there is still a default on their books. I have tried o. Several occasions to have them correct this but clearly there incompetence all over. I will have to withdraw from them when my R1100.00 contract ends early next year. Just concerned as to how long that would take if they cannot correct some simple like that default. Really sad what the status of Telkom turned out to be. There is no sevice.