bad service

<p> I just checked just for you on recharge and get offers i find out that i have left with 14 rand airtime to recharge then i bought 12 rand airtime and 5 and recharge to get 150 bonus airtime.but to my surprise i didn't get it then i called the call centre and they told me that i don't have promotion so my question is don't they know how many days they give to allocate another promotion.because they can't do this so that we must buy airtime.i thought dat they can see in their system dat i do qualify</p>