Worst service from Taryn at Vodacom fibre

I have been with Vodacom Fibre for close to 3 years on a month to month contract. When I was browsing the website over the weekend I realized that the same line rental I am on is now on a cheaper subscription. I then called Vodacom eating to know what's the process of being transferred to the lower subscription. I got through to an agent called Taryn. First of all she sounded like she just woke and really couldn't be bothered with taking my call. After enquiring with her his do I move to the lower subscription, she tells me it's not possible, I would have to cancel my current subscription which would take 30 days and then take out the new contract and run the risk of having my services interrupted. I responded that I cannot do that and there must surely be another this can be handled without interrupting my service. She says no that is the only way, I then asked to speak to someone else who could surely assist me, she refused, I asked to speak to her manager she also refused and told me it's not possible. She said she will send her manager an email. I ask her for a reference to the call and query she would log, she also blatantly refused to do that! She was not willing to assist me at all, and at this point I was really frustrated with her level of I don't care attitude! The call was ended without me being assisted after I held on waiting for her to get me someone who could assist since she was clearly ***********. I called back again later in the day and got through to a Cher, a complete opposite to the Taryn character and I was assisted with no issued, query logged, I got a reference number and today I received confirmation that my query was being attended to. Thank you that at least Vodacom has people that are good at their jobs. Taryn should not be client facing at all!