Energy Power Saver Is Not Effective!

I paid my MERALCO dues just two days ago, but not before I noticed that it was my lowest bill ever.  This now contradicts my claim which was previously posted in this blog that my November 2011 bill was my lowest.

In that post, I mentioned that starting January 2012, I won't be using my Extreme Power Saver anymore just to test if it is really working.  True enough, I did unplug the device and look, my February bill, which showed a 51-kwh consumption, approximates my September and October 2011 dues.  Also, my March bill further plummeted down to 34-kwh consumption.

Without the Extreme Power Saver, my electric consumption should have increased.  But my MERALCO bills for the past two months however showed otherwise.

I swear I did not try to do something to save on power cost.  In fact, for the past few weeks, I have been using the refrigerator more often than the usual.  Although I had been on training and was away home for almost two weeks, I was also not home for exactly two weeks when my power consumption dropped to 36 kwhs in November last year.

Now, will somebody just explain to me what went wrong?  Or if nobody cared enough, maybe, I would just simply conclude that, I have just fell prey to another false marketing strategy and therefore the Extreme Power Saver indeed is not effective.. :(