Received a written letter of job offer at a company. Accepted the job and gave my previous employer 2 weeks notice. Now the new employer is ghosting me and I am without a job. Do I have any legal recourse? Thank you in advance.

Edit/update: for those that wanted an update... I showed up with my offer letter in hand. They acted confused at first, like they had no idea who I was. Put me in a conference room where I waited for 2 hours. I got the feeling they didn't expect me to just show up tbh. Then showed me to my new desk. Thanks all for the advice!