For archival purposes, I'm trying to get the full history of transactions on my bank account since I opened it in 2019. I know my bank still has it since it's visible in the mobile app (I can scroll down to the very first transaction). However, there's no way to export it in a processable manner (the online export form only gives one month of transactions, and there's a paid service that can get up to two years).
I sent an e-mail to my bank asking for a dump of all the personal data their systems contain about me (as per GDPR article 15), and they provided me with... my name, address, phone number and SSN. In their (the DPO's) response, they wrote that any request about the transaction history is to be made to my bank advisor – this is not what I want, since they then point me to the paid service that only gives 2 years of operations.
In any case, I understand that transactions on my account fit the definition of personal data since they're directly attached to my bank account, which is under my name, and that since the transactions are stored on their systems I should be able to get them in a processable format as per article 15.
Am I wrong in that understanding?