Bank of Ireland is investing over €34m in its telephony and Customer Relationship Management (CRM) systems as part of its efforts to improve its customer services.
The bank receives more than 11,000 calls on average every day.
Bank of Ireland said its latest investment will lead to faster resolution of customer calls, enhanced self-service options such as changing an account address, order duplicate statements and request a new card.
It will also allow more transactions to take place 24 hours a day, seven days a week via phone, and improved customer security.
This latest announcement brings the total spend being made by Bank of Ireland on a range of customer service improvements to almost €150m by the end of 2025.
Earlier this year, the bank announced an investment of more than €60m in a range of branch improvements, including its biggest single investment in ATMs in the last decade.
It is also spending €50m on customer fraud prevention and protection, including investment in new technology.
Susan Russell, CEO of Bank of Ireland Retail Ireland, said today's funding is the largest single investment in enhanced systems and technology for frontline colleagues in branches and contact centres that the bank has ever made.
"We receive more than 11,000 calls on average each day and when customers call us they want speed, expertise and security," Ms Russel, said.