MTN did not deliver as promised

I was due for an upgrade with MTN, on my previous contract with them I was receiving R110 airtime. each of 14th of every month I receive my package.

Beginning of July 2017 I upgraded to a new phone and package (R210 airtime and 10G for the next 3 month). I was advised that automatical I'll receive the package for a new contract since I sign before 14th of July. But on 14 July I only received R110 airtime but at the end of the month money for a new contract was deducted.

I was given so many references even today my problem is not resolved.

On 14th of Sep 2017, I only received my 10G when I enquire about airtime I was informed that I used all my airtime on the internet. Which is confusing, how can I finish R210 airtime in a period of 3 hours when I have 10G data.