Thanks for the reply!!! What I failed to mention was that the liner had slipped off during filling...the contract came back and put it back on...and it slipped again...he did not come back for over a week as the weather was cold and rainy...so I am now beginning to think that perhaps that may be what happened with us as well...our pool is also set on the downside of a hill..
But my husband did build a trench with stone diverting runoff...the installer did finally call back late last night after 2 calls to him...he says he will be here within the next few days..I am losing faith!