airtime advance

I was recently upgraded to an airtime advance of R50 from Vodacom and I only used it once, after that I recharched and they debited their funds as agreed but after, when I tried to request I got an error that my request could not be processed and I called and was notified they is an issue on the 9th of this month.A week later I called again and was told they would log a call and a technician would call me but it never happen,,today its almost 2weeks still I cannot request and what suprises me is does it take Vodacom more than 2weeks to fix technical issues??? is they a reason I should still stay with them,,,Vodacom is such a disappointment in all their service levels and now im considering porting my number to Telkom this weekend,,,,,im done with Vodacom regardless that l have been with them ever since