Appalling service from Vodacom after being conned!

I am disgusted the level of service I have been receiving for the past 6 months due to my ongoing issue of purchasing daily bundles yet even when there is allowance remaining my airtime disappears. I've continued topping up and purchasing another bundle even though this didn't make sense. I've called in a couple of times with the same issue and have received nothing but appalling service. I usually call in the late evening's and have had agents mute me , drop my call and speak to others while I was on the line to the point where I've asked to speak to a senior as I'm still receiving no help - all 6 times all managers were 'absent' 'in a meeting' or more recently (I have a recording) 'just hold on for 15 minutes' and as always my call was dropped after holding or while 'being transferred'. I'm at the point where I'm okay with losing my number of 10 years just to get a network that gives a damn about their customers - someone I can trust with contracts for my family. The worst part is (as I've explained in the calls) My airtime was reserved so I could notify people when I'm going into surgery tomorrow. I just want my airtime back - the balance for data is still there! Your service te