Pond Boss Forums INTRO New Forum Member Introduction pond leak

Once again, it has been 1.5 years and not a full pond. watched it come up as much as 6 inches in a rain event only to watch it drain approx 1/4 inch daily. It has never reached a static point but continued to drop each and every day regardless of conditions. Well, we just had the largest rain event since construction in which the pond has filled to overflowing. In 4 days it has dropped 8-10 inches so a leak is a definite at this point. My original theory (read the entire post)I am now going to question in this way, If it was due to decompacted clay, would it leak this fast? I thought that decompacted clay was the cause but I now believe it to have a distinct leak as the extra pressure is pushing it through the leak spot. I was losing 1/4 a day when the pond was 2/3 full by level. It seems to me that the liner should offer more resistance even when full unless there was a seem somewhere.
I have approached the builder for advice on how to fix it but through what became a heated conversation would never tell me what to do to fix it. I am guessing he knows that it is not easily fixed.
A sinkhole did form at the edge of the pond after the first rainfall which I believe is due to workmanship and now leads me to believe that there could be problems with the liner. The pond was built in a bad drought and he did have trouble with getting moist clay, was it moist enough? maybe not. He told me that he designed the sinkhole to be there but I knew that was crap, why would you have a hole at the edge big enough that I could lie in it and I am 6ft 240lbs. looking back I think he was covering and may have known then that there are potentially big problems. None the less, I have not done any calculations as to how many gallons per minute to keep up with 2 inches per day at 1/3 acre full but I am not sure this is any more than a bandaid any way.
If anyone can comment on any of this I would appreciate it, I need much encouragement as I am getting no service after the sale that I was promised, he actually blamed me for not filling the pond myself after completion (he is blaming me for the liner being exposed too long even though he made no requirement for me to do so, in essence, blaming me for the whole situation). I cleared a very beautiful section of my property which was also hard for the kids as they loved the woods and wildlife and I promised them this would be really nice, It is now a nightmare because I really think the builder believes it is not fixable as I asked over and over what needs to be done to fix it right and all he would tell me is to run a pump contiuously