We have a home loan and and we have separate home insurance

We have a home loan and and we have separate home insurance. Every year now Nedbank will harass and threaten us to either provide proof or submit proof of insurance. We even have to submit the requested document a couple of time before Nedbank backs off and they will even then keep pushing their pathetic excuse of insurance with more threatening letters down our throats. We chose to go with our own insurance after Nedbank's insurance people left our house a disaster area and did not want to pay one of our claims. Where ever we go we now inform people to stay away from Nedbank. Bunch of ******* and cheat people out of their money.