Portt interview questions

Have interviewed twice with this company. Once a few years ago under singlecell. The first interview went through 3 seperate interviews after the 3rd I never heard back. I tried to contact the HR team with no success. The second interview process I was offered a job and signed a contract. I resigned from my current role. 2 weeks before I was due to start they said they were unsure if they could still offer me the job a few days later they said it was fine and I would still be able to start wit them. 2 days before I was due to start they came back again and said they could not proceed. I told him I had already resigned from my current role. They said they would pay me a small amount for 4 weeks and re look at the contract. Never heard from them again leaving me unemployed.