(1) Top up ShopeePay RM12 @ Cash at 7e, show the barcode to 7e's cashier, then use TNG wallet to pay RM12.
(2) Top up ShopeePay RM12 @ Cash at 7e, show the barcode to 7e's cashier, then use TNG wallet to pay RM12.
(3) Claim the "Goal Hunter" reward (March), say 7e RM8 cashback from minimum spending of RM60.
(4) Top up ShopeePay RM60 @ Cash at 7e, show the barcode to 7e's cashier, then use TNG wallet to pay RM60.
(5) You will earn RM 8 cashback immediately.
(6) A few days later, you will be given credit of RM1.80, RM1.80 and RM2.80 (more or less) Oxpicious Cashback (till 7/3/21)
Repeat (1), (2) and (3) and (4) till you claim all the "Goal Hunter" rewards.

Then use ShopeePay at Shopee Bill payment ("Deals, Top-ups & Bills", 20% capped at RM10 / 30% capped at RM3 discount last week) to pay Unifi and utilities, or PAM @ Pos Malaysia (RM3 daily from minimum spending of RM15).
I thought as per the terms and condition, this promotioj does not includes any reload transactions, thus not sure how come you're able to get the cashback, or was it bcz of ur other spending transactions?