Pfizer dead quite on not supplying Dostinex

I went to collect my monthly tablets Dostinex made my Pfizer, and I was told at Dischem and Clicks that they hadn't been supplied any anywhere in the country. When I asked for a reason, they said they hadn't recieved any letter or explanation from the supplier. I was also told there is no substitute for this medication. I take it to lower the hormone prolactin, which causes hich cholestral and osteoporoses, as because of having it too long already I have these two conditions. I would really like to know from Pfizer are you taking this medication off the shelves, or what exactly is the problem? I find it very unprofessional that you dont make the patients who take it aware of not suppling it. You cant just stop with the supply?