Payment aggregators popularised the Unified Payments Interface (UPI) but they have hardly earned any money from it, said an industry representative on Monday in response to a finance ministry statement that the government has no plans to "levy any charges" for the service."The concerns of the service providers for cost recovery have to be met through other means,” said the ministry on Twitter Sunday. It was responding to a Reserve Bank of India (RBI) discussion paper suggesting that UPI payments could be subject to a tiered charge based on various amount brackets.Vishwas Patel, chairman of industry association Payments Council of India (PCI) and executive director of Infibeam Avenues, said payment aggregators have suffered a collective loss of over Rs 25,000 crores in the last four years in promoting and popularising digital payments, especially UPI, installing point of sale (Pos) terminals and QR codes.“…all the support money provided by the finance