Any petrol stations that accept GrabPay yet?

I'm considering using GrapPay after Boost's disturbingly lack of interest in solving the numerous problems with their payment systems. e.g. money deducted from account even though merchant failed to receive payment.

Any serious problems with GrabPay recently?
Boost's facebook comment section is filled with horror stories... and it's been going on for maybe two months already, iirc.