The Comptroller and Auditor General (CAG) has raised concerns over the Delhi Metro Rail Corporation's failure to recover Rs 155.4 billion it was owed in repair costs and other incidental expenses. In a report tabled in Parliament on Monday, the CAG said that due to poor construction quality by the contractor and reluctance of the contractor to rectify the defects within defect liability period, the DMRC carried out the repair work (including consultancy work) through other contractor at Rs 118.5 billion. In addition to repairing cost, DMRC also incurred incidental expenses of Rs 78.1 billion on account of shifting allottees to alternative accommodation and payment of lease charge, brokerage etc.