The number of complaints received by the Hellenic Consumers' Ombudsman jumped by 30 percent to 9,757 in 2017, the office said on Friday.
Lefteris Zagoritis, who heads the service aimed at preventing consumers from being hurt by market abuse, presented to parliament its 2017 annual report.
"We have a doubling of cases in the last four years. Many people come to us as a result of the economic crisis, the reduction in income levels that makes people demand even small amounts and due to consumers being informed of the out-of-court settlement procedures, but also due to the efficiency of the authority. Allow me to tell you that in less than three months, we resolve 82 percent of cases," he said.