The University City location of a popular St. Louis-area pizza chain owes the state of Missouri nearly $150,000 in tax revenue — with delinquencies on sales tax remittances and employee withholding tax going back nearly three years.That's according to a suit filed yesterday in St. Louis County Circuit Court. The suit, filed by the Missouri Department of Revenue, alleges that Fortel's Pizza Den University City(7358 Forsyth Boulevard, University City) collected sales tax revenue from customers, but failed to remit it to the state as required by law.…