Debit order dispute

My debit order went off a day before my salary date and it accrued unpaid fees. I logged a complaint online but did not receive any feedback of the progress. I then received my statement for September and my bill increased from R 268 to R 740? But Telkom got their money in August? After several unsuccessful calls of waiting for SOMEONE to pick up the phone, the call was dropped while I was placed on hold. I called again and it happened again. This is so unprofessional of Telkom, I will never do business with you again! You claim your network is the best, but suck in 'putting your client first'. Your call centre is the worst and the customer effort is one way only...