BIS paid for it but they de activated it.

I had 3 contracts with cell c which I two cellphones were blackberry nand I paid R57 each for BIS but on the 13th I received a call from the sales consultant letting me know that I qualify for a cellphone upgrade and she went on to explain that my contract ends on the 30th of May and said that they will deliver 3 AG Chrome cellphones and they don't use BIS so I will reimbursed with more data bundles but that will start as of the 30th of May to my surprise BIS was deactivated on the 13.04.2015 I called the call center on the 15th and Noluthando said if I want BIS to be active they will have to charge ma again I denied that because 57 was deducted on both phones and was only valid from the 1 to the 13th I was told theres nothing they can do to assist me, I asked to be put through to the supervisor who also told me that I must pay again I asked them to do a break down on all the 3 contract how much exactly am I supposed to pay the total had a difference of R50 apart from the R114 I was paying for the BIS they kept me on the phone for over an hour which I didn't get positive results, I called in later and was assisted by Nontobeko who said BIS will be activated on Monday but didn't get