Apalling service after my luggage got lost

I have been given appalling service after my bags has been lost for more than 5 days! No one is taking any responsibility or helping me locate it. No one is even replying to any of my e-mails. Worst experience and inconvenience ever and no-one is helping me. Traveling through Europe without any of my personal belongings and everyone is just shifting the blame! Apparently according to global baggage solutions Aer Lingus is at fault, but I don't even get a response! What kind of service is this? I will never use you again as you don't know how to assist your customers!