Disappointed old customer

On Friday I run out of airtime while I had airtime advance it was almost R300 and I recharged with R275 airtime, R110 airtime and R29 and my phone said no airtime I owe Vodacom R6 and loaded another R29 airtime lost nowhere to be found I decided to call Vodacom call centre it went to Tobi no help and I called again a friendly lady was able to assist me but it never worked she saw my airtime and advanced been paid off her advise was switch your phone off all will be fine nothing changed I went to Eastgate mall Vodacom store I couldn't get assistance too they told me to call again call centre and I recharged again there R12 airtime they couldn't see that I recharged I'm so disappointed at this time because I'm a business woman I make sure I have airtime all the time but now this hassle make me think twice to leave Vodacom after so many years in a relationship with them move to another network provider. I'm experiencing network problem in my place but I still kept it for nothing