False Advertising

What I really dont understand is why am I still supporting Telkom when they keep giving me the raw deal. After joining them some time ago they welcomed me by giving me free air time but was shocked to learn that the airtime has dissappeared even before it was used and no one could pick it up from their system. Fast forward to 2016. After recharging last week my free airtime was supposed to expire today the 11/01/2016 (as per SMS), but then could not make calls and contacting customer service was told that it expired on the sixth day at midnight which was yesterday, the 10/01/2016, really. This people think we are stupid, how is it possible that the 7th day came on the 6th day. Can somebody from Telkom explain this theory (how did i lose my 123 free minutes). You will also be told by the operator to visit the the walkin outlet which in my case is about 30km away, you know Telkom does not have outlets in township malls/shopping centers.