Mtn doesn't care about their customer

On the 10th of December 2017, i wrote a review about MTN after they failed to honor the black Friday promo saying i didn't not meet the criteria. i wrote the review on hellopeter asking MTN to state the criteria that i didn't not meet because they never requested me to them with supporting documents so that they can process my application. MTN responded to my review 10 days ago saying they will investigate and come back to me.

I want MTN to tell me how long does an investigation take to respond to my query. This investigation seems like the same thing they did with my application as they never communicated with me as promised. I even bought my daughter a phone on MTN number and now i regret doing so.