State, Contending Overcharge, Won't Pay Rent to Trade Center
NYS Controller's office, contending that state has been overcharged by Port Auth of NY and NJ for office space in World Trade Center, NYC, refuses to pay over $3-million in rent bills and is continuing to withhold payments at rate of $115,000 per mo; according to Controller's audit, over-charges for 1st yr of state occupancy, Apr '72 to Apr '73, amounted to one-third of state's rent bill of $3.9-million; Port Auth insists charges are legitimate and says state has misinterpreted lease; authority spokesman says matter is expected to be resolved soon by negotiators; details (M)