Not honouring rewards

On 10 August at about 11h40, I called Vodacom customer care, and informed the call agent that I recharged with a R29 airtime voucher, and tried to claim the reward they currently have running, whereby you recharge with R25 or more and you awarded with R50 bonus airtime, but after I tried to claim the reward, I received a sms that informed me to recharge with R25, thereafter I called the call center. The agent informed me that a service call will be logged, I will get a sms confirming me that a service call was logged and it will be sorted within the next 48 hours. By 20h00 I received no such sms, and I logged another call, the agent, called, Sihle gave me impeccable service, he really went out of his way to try to assist me, Vodacom management decided they will not award me the reward. Now I really feel that I could have been met half way, because first you offer rewards you don't honour, your call center agent don't log the call and I don't receive a sms confirming the service log. Well I must confess I am really disappointed that I moved from MTN to Vodacom, as I can truly say MTN would never provide the service I received today from Vodacom