Telkom is a ******* service provider

Telkom has to be the worst service provider... ever. I have an account with Telkom, When I signed a contract with them in April 2018, we agreed the debit order date would be the last day of the month. It went well for months, until March 2019. They debited my account on the 27th instead of the 30th, the debit order returned unpaid as there were no funds in my account yet. I immediately raised that with them, and they denied debiting my account on the 27th. So I forwarded them a copy of my bank statement, which reflects that they debited my account on the wrong date. They still denied it. They continued to do this three more times throughout the month of April. Making me incur charges on my account. When I raised this with them again, their response was that they cannot help me in any way, and cannot take any responsibility for the charges they have caused me to incur. Every time I phone in, they they always state the issue has been escalated. Yet I never receive any feedback. Instead I get smses stating the issue has been resolved. Never stating how it was resolved. I have wasted so much time and energy with them. They have costed me 100s of rands and have no intention to fix their mess.