Terrible service from MTN and Breach of Data Contract

I'm on the 120GB per month contract, I was supposed to receive 40GB daytime data and 80GB Night data. But for 2 months now I’m only receiving 10GB of Night data together with the daytime data. I have attempted many times to have this issue resolved by MTN with no success.

MTN through their 135 customer service channel have blocked the ability fo us as customers to speak to an agent. I have emailed and DM you guys with my query but there has been zero response on all platforms. I have received terrible service from MTN.