Credit life increase premuims with over R600 without informing cllient

Standard Bank Credit life: on 2 Nov I spoke to Paul Gcaba and he gave us a quote via email and verbally of R985.48 on the new bond we were in the process with. From then I received the worst service ever trying to get hold of the policy documents, all in email. On the 15th Nov I received an e-mail stating sorry for the delay but we will only receive the policy documents once the bond is registered. OK cool, this morning I have phoned to hear when our bonds first installment will take place, spoke to Thandi 28 Feb at 10:57 and she confirmed the conversation is recorded, please recall that conversation and listen to it. I had to find out to my utter shock all of a sudden our credit life protection have increased with over R600 to R1666.40 and deducted from our bank account tomorrow. Her only explanation is oh there was an increase in premiums. We have never seen any email or proof or received any communication that our accepted quote was increase from R985.48 to R1666.40 without our knowledge. How can Standard Bank credit life increase a premium with so much and not letting us , the client know. I would never have accepted a premium this high in the first place!!!I got quotes from other places that are much less but decided to go with SB to keep all our stuff in one place and now you are taking this money tomorrow and I can do nothing about it, THIS IS ***** AND I WANT THIS RECTIFIED AND CANCELLED WITH IMEDIATE EFFECT. I will go with another company that gave me better service and still kept to their original quote of 2 Nov. Oh yes and we want our money back of the difference what we were quoted on. How do standard bank justify over a 60% increase without letting us know??