TO: Optus accounts.  Re: Prepaid A/c 0423 248795
Dear Sirs/Mesdames,
I am writing to you in this matter because I find great difficulty in understanding Indian English  -- which is all I seem to get from your helpline.  The fact that I suffer from age-related hearing loss probably contributes to my incomprehension.
I want to know why all the money suddenly vanished from my a/c.
I use the phone only a little so when I checked a fortnight ago and found I had only $6 left, I did not use the phone subsequently.  Yet my A/c was at zero this morning.  Where did the money go?
I understand that I had until the 27th to top up so I discount the possibility  that I had run out of time.  If however that is the explanation, I think it is very petty and offensive that you stole that $6 from me.  Please restore it to my account.