****** Airtime again

So i have been in contact with MTN, for the past week and a half about airtime that was previously ****** off my phone by them. I loaded some more airtime yesterday and this morning half the airtime that was loaded was gone again. One of their management team contacted me via Hello Peter and said they will reimburse me and the airtime that was ****** would be back on mt phone within 2 - 24 hours. This is a week later and Mr Willem Loots Jnr still has not been able to assist neither have the MTN call centre staff. I i going to start a petition and see who else this has affected as i want to then make this a legal matter as these are ******** acts they are partaking in.