Postal surcharge

I recently received from the UK a padded envelope size approximately 23cm x 13cm. It was delivered as addressed to my office. But I was requested to sign for it and pay an additional surcharge despite it being neither recorded nor registered.

I believe that this type of delivery is contrary to the Indonesian Postal Agreement. May I therefore ask PT Pos and Giro to advise why they surcharge an envelope which carries full postal costs.

The reason for this rather than an excuse would be appreciated.

PETER WARD

Jakarta