I am pretty confident that AGL is delaying this whilst seeking legal /government advice before they dishonestly renege on deals that appear to be affecting a considerably high amount of customers.
A plan ,rate change ,correction or discount across any service industry is always just few simple clicks on a keyboard from their appropriate departments to rectify and correct a customer's legitimate entitlement.
There is zero excuse for this long delay . I will be pursuing this further if a resolution isn't forthcoming in the next week.
Thanks