I want my airtime/data back!Every month same story

it seems like every month I will be complaining for the same thing, I let it slide last month but now I am ****ed off as hell as the same thing is happening. I didn't have the energy to fight last month but you guys are getting on my last nerve now. All of a sudden when I have airtime I do not receive the sms notifying me I have 4mb of data left and when my data has been depleted, automatically my airtime is used for data. How convenient that when I do not have airtime I get these sms's and when I have airtime more than R150 I never get the sms. This is about the 10th time this happens, the last two times I wrote to Hello peter you had reimbursed my R200 worth of airtime. Last month when I called your call centre enquiring about R200 worth of airtime that was depleted the same day I had received it, you sent me a lousy R12. As I said before I did not have the energy to fight with you. This time around I will fight, and I will not port my number just as yet until you stop being such *****es!!!!! You keep saying I need to monitor my data usage, I do monitor my data usage and for you information I use WIFI at home. The last time I checked my airtime I had R165 worth of airtime.