MTN AND THEIR DEALS !!!!!!!

I recently upgraded my contract with MTN at Southgate Branch and as per agreement of the advert that I signed for on their booklet page 39 , it clearly stated that I would be receiving 10 GB Anytime + 10 GB Night time priced ZAR 239 . To my surprise a few days back I received 15GB , further broken down as 5GB Anytime and 10 GB Night Time , I called their Call Centre who confirmed that I was loaded for that and should contact the Branch to rectify that however I did call and was told by the Consultants that I needed to come in and I advised I would not be able to drive back and was told it would be sorted as a couple of people encountered that and bearing in mind MTN is a BIG COMPANY TO HAVE SUCH . I made the effort of driving to your Branch yesterday on Sunday the 20th of May 2018 and was told that the Supervisor Khotso Mekgwe was not in who would have to sort this ,further to that today Monday the 21st of May 2018 I sent them an e-mail and did not get any feedback nor acknowledgement . Had I not constantly checked my data balance I wouldn't have noticed this , how ever this arises my eye brows to the fact that how many people do check and are getting the correct deals