Bad and worse customer care by Nedgroup insurance

I and my husband have a bond with Nedbank .we finished paying the bond but we did not cancel the policy(***6) for the bond.when i cheked they say it was cancelled last year.I know i was sick fro almost the whole year in and out of hospital till october unable to do things for myself (proof can be provided if needed) but i never requested nedbank to cancel the policy since it covers the policy.They say they send an email but when i checked the email they talk about is not mine or for my husband.Now they want me to have a new policy which is too expensive for me.i want the bank to reinsate the same policy.A policy is a contracct and if i opt out i must do cancellation myself.