Key legal question
Whether the constitutional complaint was admissible despite failure to pay the requested advance on costs within the non-extendable deadline.
Extracted holding
No. Because the additional deadline was expressly designated as non-extendable and the advance was not paid in time, the complaint had to be declared inadmissible.
Extracted reasoning
A further extension was excluded by the wording of the order of 24 March 2010; non-payment within the deadline triggered inadmissibility under the Federal Supreme Court Act.