If you are an eir customer and need to contact eir’s customer complaints number the details are at www.eir.ie/complaints/
For additional information, please see our page about eir’s Consumer Care.
Customers whose complaint has not been sufficiently dealt with by their service provider within 10 working days should contact ComReg (our contact info is here) who will then contact eir on their behalf to resolve the complaint. ComReg recent consumer statistics are here.