MTN Pathetic Customer Service

I upgraded my contact with MTN via Mondo.

I was told i will receive minutes and this was verified on their voice recording. It shows on my invoice that minutes have been loaded. But i have not received any minutes since my contract started in December 22. Mondo have indicated that they loaded it correctly on their side and that its an MTN issue and i should contact 135. But MTN customer care is sending me back to Mondo. Complete nightmare going back and forths for many times now. MTN is has been charging me for all those calls which my minutes suppose to cover. Please i ask you to really think carefully based on this thread and that your time is valuable. From what i gather its an MTN glitch since their invoice shows i should have minutes but its not loading on my profile. So clearly they can't resolve their own techinical issues. We should really think hard about where you are taking your next mobile contract.