Genius Laser Ruined my Neck

I had a bit of loose skin under my neck, being 40 I thought this is ridiculous. I am too young for a turkey neck. So, I did my research and made an apt for the genius laser. After it was ok, all looked ok. I then a few days later broke out in a bad rash and had marks from the laser itself. I did use a heavy cream on my neck a few days later which is why the rash appeared. But, now 3.5 weeks later you can still see the marks from the laser itself. And i swear my neck looks worse than it did before. I am not sure why i am the only person this seems to happen to as everyone seems to have wonderful results. So, now I feel like i am the only 40 year old with a turkey neck. Waste of money. So mad!!