GT Biopharma interview questions

Very strange and very suspicious. I had to download an app called Signal to do an interview. I was initially contacted via text by a Melody Haefs 415 number. Then on the Signal app I was asked several questions, by a Stanley Buscham 801 number. I was told I was hired and was emailed an offer letter. I was also told I would receive a check to purchase office equipment for my home office. Paying 27.00 an hour, after 20.00 per hour for training. When I called the main number of GT I could find neither one of these names listed on the employee roster. I have tried reaching “Stanley” to no avail. Please BEWARE.