Cant receive calls on my MTN contract

Woke up this morning got a massages from work saying that they have been calling me on my work phone and its going on voicemail and when I checked, the phone was on network signal OK. I tried calling my MTN phone using my other phone to check what is happening and guess what indeed calls were not going through. I then called MTN 808 using the number in question were I spoke to a consultant who told me the problem was call barring and that I should dial #330*0000# I did that and still couldn't receive calls I called MTN again and this time I was told a different story that my network connection has been debugged and that a reset was done and everything should be fine. Checked my phone was still not receiving calls, I called MTN again and this time I was told that the previous day my phone is pending some override settings app**** by the manager the day before and this should take 2 days. Here I am with a phone that has a MTN sim card that wont receive calls for 2-days and yet Im on stand by at work what an inconvenience. REF: ********** 91