Utility charges

Dear sir aoa, recently the topcity 1 housing scheme has imposed utility charges 3 lacs for 10marlas and 5 lacs for kanal, which will be paid in one year on instalment. Previously thier development charges were 3 lacs for 10 m and then enhanced to 5 lacs. Sir it is very unjust to receive huge utility charges. Plz guide us in this case. Can we proceed to court for this unjustice. Abdur rauf swabi. Reply please via my email