MTN does not escalate queries, they cut you off

I migrated to MTN prepaid to test their network and service before committing to a contract. I bought a MTN 900 MIN-All Net Bundle Valid 30 days through the ebucks app on the 24th of February. Firstly, I did not receive the airtime on the 24th but only on the 27th. Then I realised that I receive 30mins per day for 30 days. This is not what I bought for I did previously buy everyday data which is added every day. I phone customer care at 11.08 on 1 March. The consultant said their system were offline and that I can phone back after an hour, or I can go to a MTN shop. I said that I wasn't satisfied with struggling 5 days to sort out a simple transaction and wanted to escalate the complain. She simply terminated the call....