Vodacom cant get any system to work whether its a refund / stopping a debit order or cancelling sms and emails

I have been battling with Vodacom since the beginning of August with regards to the fibre installation etc. they have made me wait on 3 occasions with no show for the installation. once they got the date right and actually pitched up, they left my home in a mess and the work done was incomplete and untidy - the next day they came to correct this. However they have been debiting my account for R599 (3 months) now for what was said to be a free service which they even blocked( so we were not able to make use of it) but I was being billed for it, I have on several occasions requested them to cancel that debit off my account of R599 to date they have not cancelled it (3 months run now). I have requested them to stop sending my Fibre installation sms at odd hours off the morning around 1am every day I receive 2 sms to confirm my Vodacom fibre installation. everyday I receive emails to confirm my Vodacom installation. can these sms and emails be stopped? Vodacom cant seem to get their system programmed correctly. can these debits be stopped?? Vodacom cant seem to stop the debit order? can my R599 x 3 be refunded - they cant get their refunding system working either ... months on end battle for me