Pool leak not getting resolved

A few weeks ago we had a leak in our pool. Discovery quickly assisted and the contractors assigned fixed the leak...or so we thought. We monitored it post the repair and noticed the water level was still going down quicker than usual. I contacted Discovery again to reopen the claim. It has taken a lot of following up from my side to get some action on this. I had no feedback/contact from the original contractor. Eventually they came out and did a leak detection again. I was then told I potentially have to pay excess again...why is this the case when clearly this was not fixed correctly the first time they came out and did the repair. I find it very hard to believe that all of a sudden we have 2 leaks within weeks of each other, if that is the case, then surely there is a bigger problem to be addressed. Is this going to keep happening now? Everytime the job is not done correctly and I end up paying excess again and again and could've just gotten a professional company out to do a proper job the first time around. We are wanting to replace the paving around the pool with decking and was hoping once the leak has been fixed we can go ahead, but that now had to be put on hold. Unfortunately I have lost confidence in Discovery Insure and their choice of contractor. The service the second time round has been shocking. I recently moved our entire portfolio to Discovery and now I seriously am second guessing that decision I made post the service of late.