Can't understand premium increase

At the end of August my monthly premium was deducted from my bank account and had increased by 71% which astounded me. I had spoken to a consultant to query this number as I hadn’t received the revised quote as it had been spent to my spam mailbox. The consultant tried to explain the reasoning which included inflation, risk and claim history all of which cannot surely result in such an increase. On the call it was revaluated and the number was reduced by a couple % points. At the end of the call I’d ask that they conduct a full audit on my history as it would be very clear that 2 claims related to the same problem. When claiming for a damaged floor, I told the assessor that it appears to be a water leak of some form but he was adamant that it was not and that it was a water spill and proceeded to pay for a wooden floor replacement for which I paid excess. The issue persisted and the water damage became more pronounced and for which I called to log a claim again. A new claim was logged for the SAME issue not a different issue and I paid excess for this too along with suffering the consequence of an excessive premium hike for an *********** assessor. The second assessor included several people coming out to my property which included a leak detector who on 1st inspection said his 100% certain of where the leak is and then required the wall to be chopped and the basin to be removed, upon that being done it was clear the leak was elsewhere. The leak detector came out again and gave an assessment that the leak was in the shower and resulted in my shower being chopped up to find the leak which was then repaired. Everything then had to be repaired, wall was replastered and painted. However, the repainting resulted in the paint running as it was app**** on wet cement (still in this state), my basin wasn’t secured and I had to call out the people again to secure it. When resecuring the basin they started a leak on the basin (which is still dripping). Please explain how a burst geyser and poor assessment warrants an above 60% increase in my premium? This is ****************, please review the above and come back to me with something concrete.