Poor Poor Poor Comms channels

I have emailed vodacom 5 times since 4th of June 2018 regarding pricing and an overcharge on my account. Special pricing was announced in April for my complex and they are still charging me the same price with a slower speed. I sent a huge mail on the 4th of June and then every week after that followed up with no replies from Vodacom. No assistance was given and still no assistance. I phone the support line and it either drops or the person on the other end never gets back to me or they are unable to assist. This is utterly rediculous... there are no communication channels between customers and support and no one is taking accountability. On the other hand they have a customer paying R750 a month and not getting any support whatsoever. Trying hellopeter, facebook, twitter... literally all channels I can possibly try to get in contact with them.