Data on payment and terminal transactions are available for example on the Bank of Finland's website, while data on TARGET2 are available on the website of the European Central Bank. Furthermore, the Federation of Finnish Financial Services annually releases statistical data on the banks' payment systems on its website.
You are well advised to contact your own bank in many payment issues. In addition, you can find information on payments and SEPA on the website of the Federation of Finnish Financial Services. Information on SEPA is also available on the Bank of Finland and European Central Bank websites.
First you should look to your own bank for a solution. The Finnish Financial Ombudsman Bureau also helps insurance, banking and securities customers deal with problem situations and reviews complaints. Complaints against banks or insurance companies may be filed with the Finnish Financial Ombudsman Bureau.
Many banks provide information on safe payments on their websites. Information on safe payments is also available from the Federation of Finnish Financial Services (in Finnish).