MTN can't unblacklist my phone after they promised

I upgraded my contract with MTN in february with an offer of two devices.1 of my devices was ****** on the 23rd Feb and I called MTN to blacklist the ****** device.Amazingly they blacklisted the one I have instead of the ****** one. I have made phone calls to their very fruitless call centre (808) to unblacklist my phone and blacklist the ****** one. They keep telling me it will be open within 72 hours. <br> <br> Last week Tuesday (3rd March) I wrote a complaint here on Hellopeter and MTN responded saying that they have escalated the matter to the consultant who blacklisted my device to unblacklist it and I should again wait for 3 days. Its been 6 days now and my phone is still blacklisted and not working.<br> <br> they just respond here to act like they are taking responsibility. however, the real fact is that they do nothing. they wrongly blacklisted my devices in less than 10 minutes but they can't correctly unblacklist it for almost two weeks.<br> <br> If they can't unblacklist it how do I go about this.How can I pay for a phone that is now a decorative toy in my hand. Is it possible to return this phone and they give me the working one? because I am talking about a new Samsung J1???<br> <br> MTN whyyyyy?????