MTN & Bad Service again

I app**** online for the 100GB black Friday promotion and received an email on the 3rd of December 2020 with reference number stating that they will contact me in 48 hours till date no response. I have been calling them to check on the progress and have been taken from pillar to post from the 5th of December and even went to their branch with no assistance as it is an online deal. I have cancelled with my previous subscriber as I believed this is a good deal and yet MTN never seems to fail when it comes to their bad customer service. I left MTN 5 years ago for such, and every time they seem to never disappoint with their pathetic service. The deals they have they are excellent, though I do not mind paying extra for 1000% better service. Guess am not going back to MTN.