Billed for Service not signed for with Upgrade

I had previously had a Blackberry device on a top up contract and had the BIS service. A few months ago I upgraded and signed a new contract that came with a new Sony M4 Experia device. Vodacom however continued charging me every month for BIS at R59 even though I did not sign for BIS on the new package.<br> <br> I called Customer Service yesterday after noticing this charge on my statement and got through to Palesa who explained that it was my responsibility to cancel the BIS service even though I had not signed for it on the new package and that the franchise was responsible to advise me of this. <br> <br> I disagreed and asked to speak to a supervisor who of course was busy and she promised he would call me back BUT NEVER did.<br> <br> I feel I should be credited for the BIS service as I did not sign for it on the new deal and cannot be used on the Sony device.