Contrary to your experience, I have great pleasure dealing with DiGi customer service. Mannered operators and their technical support is responsible to follow up cases i.e. I complaint about poor signal quality in my area and the engineers/technician continuously update with me for a month until the issue is completely fixed. Moreover, I'm just a prepaid user.
On the other hand, I have encountered numerous bad experiences with TM/Maxis/Celcom.

In the case of plan changes, there is no charge to set up all the 11 numbers all over again.

Yes. Charges only apply for changing existing FnF slots.

You quote something that was in May 2007. We were allowed 2 changes at that time. It's October 2008 now though.

You will be paying RM30 for 365 days validity. Non-refundable RM30. You should have got the 1-year validity by reloading RM100 last time.

SMS seems a little unstable lately. I missed a two SMS already.

Yes, my friend told me that I am supposed to receive the SMS.

This the world that we are living in. You are still exposed to radiation even if you live in jungle. Telecommunication have eased life and saved many lives in the long run. Moreover, effects of radiation from a well designed device is not known yet. Whatever youtube videos showing that mobile phone can cook egg or fry popcorn is a hoax.

Call helpline and they will change the ringing duration. I'm happy with DiGi 20 second default duration. I don't like the phone to ring for long. I would have picked up within 20 seconds if I want to answer the call. Lol.

I don't remember the exact term. It's called call divert delay time on Nokia.

No charges.

If not mistaken, I knew someone who asked DiGi to turn on missed call notification and have long delay.