Terrible Service From Vodacom Again

Once again I have had terrible service from Vodacom. So I received a call to migrate one of my contracts as the lady said I'll receive more benefits and pay less so I agreed to everything. She said I'm currently paying R398 and my new premium will be R388. When we were done on the call I checked my account and see I am only paying R159 for my contract so the new contract will be more than double what I'm currently paying. I called back straight away to stop the migration only to hold the line for 20 minutes. A consultant finally answered but then had a fat conversation with a colleague regarding his target and eventually cut me off without even speaking to me. I am furious...it is always an issue to get things sorted with Vodacom.