Upgrades not as discussed telephonically

Upgrades Department called and said if I don't upgrade before end of February, my bill will more than double. But for an additional R10/month I get R150 airtime and a new device. I said I do NOT WANT any other add ons like Insurance... My bill now has insurance added. Remove it please. I did not agree to it. Likewise, my Data Line was upgraded, I was told my bill would go from R183.68 (20g) to R209. 00 (30g). My bill is now R273 and also has insurance added... This is NOT the price I agreed to on the phone and I certainly did not agree to any insurance. I have a good mind to cancel both as this is definitely not an upgrade or what I was told to expect.