Poor Service and Review Assessment

Good Day, I bought a preexisting house, as soon as my bond was approved. Bettersure call agent team called me and secured a lifecover and insurance cover. I bought the house in 2019 and now I am in my third year in this house. The Bettersure assessors never came to assess the house to see if there are any prexisiting damages that needs to be taken care of. Fast forward 2020 late December the roof started leaking so a point were the ceilling gets damaged. We only saw the damaged on the ceiling and suspected that something was wrong. Then i called Bettersure in January and they brought guys to my house to do the assessment and the claim was rejected. i do not even have 5 years leaving in that house to justify that the damage was due to lack of maintenance. When you buy a second hand or insure an old car the insurance company will tell you to take your car to auto general or dealer to assess your car so that they can understand the preexisting conditions of your car. That never happened with my the house insurance and they have been deducting my money every month and increasing their premiums annually. Bit when it came for them to atleast call me and tell me they have rejected by claim that never happened , i had to follow up with them on a daily basis regarding this no claim. I didnt even receive a reference number or claim number on the call. No phone call, no explanation or even a mail of detailing the issues they have seen on the house since they brought the assess. I feel like my wasting my money with this insurance company . I am going to cancel everything i have with them. Its not worth it at all.