Unprofessional

I went to Grub and Vine end of September for an interview to speak to the manager Henry. The interview as to which he forgot about the first time, i was then contacted via videocall and asked to come in the week after. I went for the interview and was told by the manager Henry that I have the job as assistant manager for the new Grub and vine location and asked to come in to the main restaurant in Bree street for a shift. Was told after the shift that they will let me know when to go to the new restaurant and will keep in contact. After a month i contacted the manager Henry to ask when i should be at the new restaurant as to his reply " we wont be needing you" via text. After I was told I have the job. That is very unprofessional and missleading. Think I will need to contact my lawyer on what to do.