Unreasonable service suspension for Telkoms errors

Telkom suspended our account, according to them it is in arrears, but as per my bank statements below happend:

On 30/10/2018 an unknown Telkom source deduction of R600 was made.

On that same day my correct and normal debit order of R600 was deducted for November 2018, which is correct.

On 15/11/2018 the Telkom unknown source paid back the duduction that they made on 30/10/2018. All was sorted them, no worries further.

On 30/11/2018 my correct and normal debit order of R600 was deducted for December 2018, which is correct. Now I want to know why is our services suspended when Telkom got their money for December.

This is unacceptable! As the extra cost that they say is in arrears is Telkom adding their own stuff, as we saw each month a few rands were outstanding out of nowhere and now we have to pay them this in order for them to give our service back! Now for this, we wanted to be lenient to Telkom and just pay the amount as they giving me a bad credit record!

What I cannot understand is why they quick to suspend accounts for outstanding amounts that they add. I am fed-up with this poor service delivery from them. This is a money making sceme and they do not care about their customers! Now we have to struggle and be witgout Wifi!