Yeah I just tried again and now this one went through.

Probably you are right, I have mistyped the card expiry date that's why previous transaction 'hang'. But surprised it still pending rather than fail.

Thank you very much sir.

Let's say you are paying the minimum Unifi amount (RM158). Autopay gives RM2 rebate and 0.2% if you use cash rebate, for a total of RM2.32 cash back

If posonline gives 5% (I haven't confirmed that, just trying for the first time, but based on previous postings I'm fairly confident it should) then you get charged 2.12% (2% charge plus GST). So your cashback will be 2.78%, or Rm4.39.

Of course, if you autopay using AEON Watami (3% cashback) would be better, but my Watami cashback looks likely to be maxed out regularly. Looking only at CIMB CR for this comparison.