Pathetic Service

During the month of November I app**** for an upgrade from 20Gb to 50GB on my LTE service. I had to visit the store four times before the application was eventually processed. After I have been informed that the application was approved, I enquired about the additional data that was not made available. I was then told I had to wait till the new month which I did only to find that it was still not upgraded but I have been charged for the upgraded service. I went to the store again and was accused of using all the data and then wanted to claim more. Eventually one of the other ladies in the store confirmed the additional data was not allocated. I was then promised I will be contacted the following day to confirm when the additional data will be made available. I am still waiting.....