After several weeks of low network speeds (less than 30kbits/sec) during peak hours (8pm to 11pm), and complaining several times via this forum, I must congratulate MTN on sorting out the issue. I now download at up to 1300Mbits per second, with rates of greater than 400kbits per second as the norm.
I hope they can keep up this service. I even extended my data bundle from 350MB to 2GB
See what happy customers are all about