ABSA Insurance - bad service

We have purchased a house through Absa last year. The we need to claim from Absa insurance and 110 stories. Due to heave rains that we experienced, my roof started to leak so I contact ABSA, they have sent out the assessor to come and have look, in the meantime it was still raining. Then I contact them, and they told me that they will get back to me. I have sent a quote to ABSA insurance as well. Finally, I receive the mail just to inform me that the claim has been rejected, due to the fact that someone did repair the roof before. As I explained to the lady, when I purchase the house, I did not go on the roof to see if the previous owner did any repairs, and that ABSA approve the house like that when we bought the house. Just after that I have send a mail to the claims department, pathetic still waiting for a response from them. I have rep**** on the same mail again and still no response. So, ABSA insurance must I start to look for another insurance company.