sorry ya noob question - i recently found out that topping up Boost with Master Quantum and Visa Signature does not entitle for cashback. The customer service say i can try top up with bigpay then use bigpay top up boost so i get cashback, is this true?

i am topping up like RM200 monthly only and i feel like the cycle is quite big if i were to top up bigpay then use bigpay credit card to top up boost. any comment?