Onecard reward points showing huge negative balance

I suddenly noticed that my onecard reward balance appear negative it was showing -12000 points. On checking I realised they posted points reversal entry.

As much I understand in future what ever reward points will be credited will adjust against this negative balance and so there remain no benefit spending on onecard.

In my view this is silly practice by one card first they credited rewards to lure clients as the one who is rewarded recommends it to others but now months later of utilising reward they deducted reward points turning reward balance to huge negative.

I am not alone there is huge community who were hurted by this act of onecard. I am writing review against this on Google play and also going to oppose it on Instagram page, hope many others do similar and onecard would have to reconsider their decision. Please share your experience and views.