Mtn false advertising and lie

Mtn Momo promised two plays when you buy data or play lotto via MOMO,they have been awarding this two plays until three weeks ago,

Now they award this two plays when they feel like it or not all in my recent case,i sent them a complain and a smart person ask me to take a screenshot knowing very well there is no taking a screenshot evidence of something that was not awarded,

They now claim they cant see client activities on the Momo app which is very strange since its their app,

Please help with this false advertising and lies w by told to clients,

I want my two plays as they stole or decided to keep more than 40 plays in the past weeks,

I notice this type of false advertising happen a lot with this big companie and nothi mg happen to them and so are their useless uninterested service desk personnel with bad attitude,

Regards Lazarus