BIS REVERSAL

<br> I asked the BIS to be reversed and I was told that it can not be done. I refuse to beleive this because on the 01 November 2014, after I bought this phone I did not know that it does not use BIS then I purchased it, on realizing that I did not have the data I phoned Vodacom and I was told that this phone does not use BIS and the BIS was reversed. Now the same service provider which reversed the BIS 4 months down the line is telling me that it is impoosible to reverse the BIS it can not be done.<br> <br> All I am asking is the BIS to be reversed, it not used i believe it can stll be reversed as it was done in November 2014.