What do I do after quitting one company for another upon their request and I havent worked since?

I worked for a company, found a better job. The company I was going to told me that I couldn't put in a two week notice because they needed me to start the next week. I quit the job and have worked two days and two training days since. It has been over a month, I have contacted the HR person that hired me and each time I get the same response, which is that I will be called back and told what time to be at work and who I will be working with. This doesn't happen. I show up and am told to go home and they will let me know when to come in. This doesn't happen. I quit a decent job expecting to have a better job but it seems I dont have a job at all. What should I do?