Misinformed when migrating

I migrated from a smart 100 to smart 250 on July at Southgate store, I told the lady who was assisting me that I'm willing to migrate only if the package includes the free monthly 1 gig. The lady agree that I will be part of the package, but when I received my allocations it was not part. I call customer care and was advised that the 1gig is not for that package. Went back to the store was promised it will be sorted and the lady acknowledged her mistake. I've been going back and forth to the store even the store manager knows but till now I've never been helped, whiles the mistake is on their side, as I was wrongly informed at the store, I was promised to be called till now I've never been called, I want to be reversed to my old package and to the remaining months left on my old contract, and be compansate for the extra data I purchased during the wrong migration period