Sadly nothing can be done.... All departments have legal cover about such scenarios. All departments have legislative right to recruit employees below BPS 16. Unless this statusqou can be altered in assemblies by proper law making process, courts can not take any action about said condition. And, as some one pointed out above, it is not in the favor of the incumbent govt. of Sind to take any such step.

It is best for aspiring candidates to prepare for CSS and PCS or other vacancies which are above Grade 17 where chances of 'direct bharti' is still difficult and hence merit is prevailing to some extent.

Don't loose heart and Don't waste time on these jobs... Aim Higher.