Vodacom fibre

in November i was supposed to have a debit go through on the 25th, it did not even though there was money in the account. next thing i was told that i owed Vodacom more than the fibre instalment. i paid R700 instead of R599 because i couldn't prove against their claim that i did not avail money. In December i decided to pay at Checkers before the debit day to avoid being told that i did not avail money. i received a statement telling me i now owe 200 more than my monthly instalment and a collection letter has now been sent to disconnect my service. @VODACOM, really i thought i was getting services from a professional business which is both empathic and ethical. this ******ion is going far now. i signed up to pay R599 but it seems every month i incur costs i never signed up for