SOS HELP! Please help, MTN cell broadcast service voraciously eating up the battery on my HTC M9. Please help. Any advise will be appreciated. Please see pictures for details.

What I have done so far
1. Disable Cell Broadcast Service via Call Setting, Cell Broadcast and deleting the channels and disable Cell Broadcast.
2. Called MTN 180 Call Centre to assist in disabling the services. The guys whom I spoke with said it's a network issue and that i should be patient. Guess what? I have waited for over two weeks and nothing seems to be working, no solution.
3. I took the phone and the SIM card to MTN care office around my area at Ikota Complex and at Abraham Adesanya, yes two different locations and after manipulating my phone for several hours (without my consent), no solution.
4. I have not installed any update lately so software update is ruled out since I used the same phone for over a month before the MTN Cell Broadcast started showing up its ugly face.
5. I also Googled on how to turn off this service permanently and tried every advise on the first two pages of Google returned results but to no avail. Anytime I disable it, it pops up again after few kilometres.

Why am I worried about this?
1. The MTN Cell Braodcast Service has become both a major PITA and a distraction to me in terms of work and pleasure because I move around the island and mainland frequently for meetings each day. I get several SMSs within every couple of minutes. Please see pictures.
2. The MTN Cell Braodcast Service is eating up my battery as I hardly enjoin a half day charge on a device that promised 36hrs endurance time.

Device
HTC One M9
Sense 7.0, Android 5.0.1 Lollipop

Please Help!

More pictures

Further pix

Port to another network.

blank:
Port to another network.

Thanks for this advise. i will definitely do that by tomorrow morning. Many thanks

Edit: is Etisalat okay?