Looking to move companies from Electric Ireland

Hey guys, this might be a post that comes up a lot, forgive me if its in the wrong place. I've been having ridiculously high electricity bills, roughly around 600 euros per 2 months, and they are not estimated. Of the two months I spent one month entirely out of the country and I switched off the power off the entire apartment when I was away. When I sought help from Electric Ireland I got none, and no advice was given on how to manage the situation. 600 euros is very high, I haven't changed any appliances whatsoever. Im not saying that the new company will be giving me cheaper bills but Im hoping they can help me solve this mess. What company would you recommend as an alternative to Electric Ireland.