What kind of kit did you use to get these readings or are they from a pool store? There is no reason to add calcium to a vinyl pool! Whenever a pool store tells you that, it has to make you suspicious that they don't really know what they are doing.

Your pH is a little high but not terribly so and depending on how they tested, it may not even be accurate since some kits cause falsely high pH readings whenever the chlorine level is above 5ppm.

Can you test your water yourself and give us your readings? (Test kit suggestions given in my previous post.)