Mtn dispute for nearly 2months

I recently upgraded my contract and was supposed to receive 20gb promo data, ive called these call centres since may 2021 trying to resolve this problem and most of these call centre employees are clueless of whats going on as ive been given the wrong information time and again with my tickets being logged in wrong departments and some of these operators sounds like they still half asleep and some of them unprofessional do not know how to speak to the customers which pay they salaries. Mtn needs to properly train these operators cause most of them seems lost when you talk to them. I can not believe ive been waiting nearly 2 months for them to sort out their mistake but they quickly to fetch payments every month.