The usual cause of new wrinkles in an in-ground pool liner, is that the water level in the ground surrounding the liner got higher than the water level in the pool. There are 2 ways to prevent this problem:
1. Lower the water in the ground around the pool with drains and/or pumps.
2. Keep the water level in the pool higher.

Once wrinkles have formed, the only way to remove them is to lower the water level, and than work them out. This YouTube video illustrates that process:
http://www.youtube.com/watch?v=stTv2gKxpTw

Please note ALL of the following points:
1. The water has been drained to the point of leaving only a few inches in the shallow end. (Wrinkles can only be moved if there is little or no water hold them in place.)
2. The liner is held in place with a high capacity vacuum. This can be done with multiple shop vacs, or with one or more pool vacs. Failing to do this properly will damage or destroy the liner!
3. Suction is continuous over the steps, due to a support and cover fabricated for that purpose.
4. The shiny texture of the liner suggests that the video shows a NEW liner installation. In older liners, the chance of permanent damage to the liner, and the difficulty of moving wrinkles, is greater.

All in all, it's a tough situation. Generally, refilling the pool will NOT remove the wrinkles.

Sorry I couldn't offer a more pleasant answer.

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