Intertek interview questions

Staffing company helped me get the job, so the process was fairly easy. The interview took about 2 hours, since I meet with the whole QC team. Everyone was really nice, which I was very happy about and wanted to work for the company.

Company first contacted me a month after I submitted my application. Asked if I was still interested in the position and if I would like to schedule an interview. The email was clearly a copy and paste form email where the agent inserted the job title and other information with missing or awkward spacing/punctuation. I noticed at times the wording of the emails became slightly less than professional in vernacular from what I expected. I scheduled a phone interview for the next day and received confirmation as to when and what number to call. My appointment came and went and I was unable to contact the "talent acquisition", left a message, and tried again 20 minutes later and still was not able to make contact. After 24 hours with no word I was no longer interested in the position. Too many red flags here, a company of this size should not be having these issues.