Vodacom: dishonest or ***********?

I pay my invoice every month. I check online. I pay the amount, and even round it up. However, every few months, vodacom starts threatening to cut me off, because I'm R280 in arrears. Like clockwork. Always R280, despite the fact that I pay fully every month. A staff member told me this happens, no one can explain it.

Vodacom is being dishonest. They are ******ing money from loyal customers.. The same way they tried to ****** 10k from my deceased father's estate. There is a serious problem with this company.