Several comments:
It happens all the time, at least to me. Every time I found a juice that I really liked, it went out of vogue and got dropped withing a few months. It seems to be the nature of the business, with juice flavors changing constantly. Lots of money to be made on the "next big thing".
Next, I can't imagine vaping a single juice all the time. I have at least five or six different flavors in my rotation at all times. Maybe it's time for you to expand your palate a little?
Lastly, this is precisely why I make my own juice. Not particularly creative but I have very thankfully found recipes from others that I love. There's a few that I miss, and haven't found a good recipe for some of my favorites (Boss Reserve anyone?), but for the most part I have been mixing a lot of very good custard and fruit recipes. It's a good way (maybe the best way) to stick it to the B&M that doesn't seem to care about your needs, whether it's a "business decision" or not.
Oh, and you can save a crap-ton of money.
