Bad Vodacom service upgrade

I was due for an upgrade on my phone ,and Vodacom called to upgrade to a 100 gig data plan , where I was on a 50gig data plan , and a top up calling option , they then changed my phone contract to an LTE home internet...when I relised that I can not make calls any longer , my wife called to find out what the problem was , she was then told that I need to call in myself seeing as the contract is on my name , I was in an area with no signal..after speaking to 3 people at vodacom they assured me that the upgrade can be reversed..on Saterday the 2nd of July being back at home being able to call again a vodacom guy who was very rude said it can't be reversed, and I have to wait a month. All my business is done on my phone with a number I have had for more than 15 years..one lady said she would call back after 72 hours but no one has made any contact concerning the reversal.