After a decade of being a maxis postpaid customer, I finally jumped to celcom for the burung hantu feature. But somehow after I did 3 reloads, the last 2 reloads did not extend my credit validity period, so I asked their Celcom Care Chat and they told me that topup can only extend the validity period IF it is done when the number is not valid. This sounds very weird to me, can anyone here confirm this is true?

I still couldn't accept the explanation, so I chat with them again, this time they told me must be 3 days before the validity ends.

me: if i reload my xpax magic sim when the validity period is still 1 month away, will the validity period be extended?
Hafiz: No, you're advised to reload within 3days or less before your validity end for extend the another validity.
me: OK, I couldn't find this in your website T&C...
Hafiz: That's you may refer to the Celcom Centre for the condition of prepaid account.
me: ok, thank you
Hafiz: You're welcome.

Good to know this, thanks! I reloaded a few times although still active, because I didn't know that the free 75 sms/minutes are limited to celcom numbers only.