Disgusting service from VODACOM

I have had the most pathetic service from VODACOM. I have been sending emails since June trying to rectify a botched delivery but with no joy. Their customer service consultant Hlonipha Mampofu has promised me more than a month ago that someone will call me to rectify the problem within 2 days. I'm still waiting. This was after calling for days to the call center and emails back and forth for weeks on end. I keep getting promises but no delivery. But my debit order goes off timeously for payment. Today for the first time in my life. .I have reversed a debit order because I got another invoice of a hike in my debit order amount ...yet again in the past 3 months...but I still don't have the product requested. I am at my wits end with VODACOM .