Terrible customer service

I was trying to make purchace at Hirschs when i used the platform. when i tried to log in my password failed and when i tried to reset it it said there is an issue with my account. After several attempts to contact them to fix this, i discover someone else was using my details. They were not helpful in trying to resolve the issue. they confirm that after the ID verification process confirmed that i am the ID holder but the account and my personal email are registered under some one else. I am afarid this will affect my credit record and no one is willng to help correct this. i am so distraught as my attempt to use the platform resulted in my identity being ****** and my cerdit score compromised