Brand new pool leaking

We purchased a rectangular 4.5m x2.2m x 84cm pool and used it for the first time this year. It is brand new and still in its plastic covering and sleeves. Upon filling the pool with water, I discovered that it is leaking. Despite a thorough inspection, I could not find any visible holes, and I suspect the leak is coming from the seams. This is extremely frustrating, as these pools are not inexpensive, and we have not had the opportunity to use it even once.