Refusal to honour new policy terms

I have held a Nedbank homeowners insurance since 2013. During this time, only the replacement of a geyser has been covered. However, I am now informed that Nedbank insurance has changed their policy terms and will now cover the cost of repairs to a geyser. So if someone were to take out a policy today, they would have cover today. HOWEVER, as a loyal customer, I only get to enjoy this benefit on my renewal date which is at the end of the year. Thank you very much. I did not expect to see a day where Standard Bank would trump Nedbank but insurance-wise I assure you they have left you in the dust.