Vodacom never answers 111 calls and incorrect bill

Second time in a month or so. No reply on voda 111. The help desk is outsourced and last time they said they were aware of the problem and looking at it. I dont think so. Either there are not enough staff of the staff just ignore the phones, a sickness which is now common in SA. I have been billed incorrectly and its frustrating not to be able to actually speak to a human. One cant hold on for 20 minutes at a time. You can phone at midnight and the voice tells you about high volumes and asks you to phone back. Useless.