So I’ve been out of work for around a month and a half or so due to a severe knee injury and I make sure every time I’ve gone to the Ortho I bring a printed out work note for my job. A couple of days ago one of my managers texted just basically asking me when I’d be coming back even though it said it on the note I provided, flash forward to today and he texted again and to sum it up said that they haven’t heard from me and if they don’t hear from me soon they’ll have to terminate my employment. Can they do that? I’ve been providing the correct notes and they’ve seen me since my injury so they know I’m not faking it, what should I do/say back?