I have been a part timer at ups for almost 18years. Came back from a vacation to find out a fellow employee who’s below me on the seniority list got a full time job off the dovetail list. Four people actually got the call. Since I knew I signed the list I called the union lady who makes the calls for the dovetail list, and she said she tried to call me five times over three different days. From what she said my phone would keep ringing and my voicemail never picked up so she bypassed me and moved to the next person. I know I have no issues with my phone. Looked at my call log online and no call from the union. So through no fault of my own I missed my shot on these full time jobs. I’m told they can’t reverse what happened because the people who got the posts might’ve quit another job or changed their lives in some other way so they could fill the post. Supposedly I’m first on the list now for the next jobs but who knows when they will be or if they will be at a time I can work, which the four filled jobs were at a time I could accept the position. One of those jobs should be mine. Since this was caused by someone in the union I can’t file a grievance right? Is there anything I can do?