I am based in South Africa. We tried both the Neobar and Neofit. The Neofit was the better option but agree with the comments above. Having tried both we felt tape was still the better option. We use a barrier film to protect the skin (if available) then extra thin hydrocolloid strips. We then use either zinc oxide or hypofix tape (5 strips) in much the same technique as described above.
I've used roughly the same thresholds as Hamed, fudging a little higher or lower based on symptoms. In addition to the collateral information Hamed recommended, the single biggest thing to figure out (in my experience) is whether this is iatrogenic or not. Often times, iatrogenic hypercalcemia even at high levels, can self-correct whereas if there is a real underlying cause, that too can suggest definitive therapy. Assuming it is not iatrogenic and the Family history is non-contributory, I would at least consider a diagnosis of William's Syndrome.