Still waiting for range extender as part of data package for over 3 months!

I took out 2x 10gig data packages in August 2017. The store, Mall@Reds, did not have stock of the range extender that was part of the package. They gave me the deal, and said that I wont get the range extenders. I called the call centre to complain only to be advised that I will definitely receive the range extenders- as this was part of the package that I am paying for and that this is Telkom policy. I have since called the call centre several times to get a resolution to this. I am told that an email will be sent to the store manager, and that the call centre supervisor will be copied in. I have received no feedback at all. I cannot call the store- as their number routes to their call centre. Please may you assist me in getting my 2 range extenders, I am paying for the contract- so please can you uphold your part of the deal?