Postal Carrying Update

I’m in the middle of a two-week vacation fill-in on a nearby rural route. It pays for 5.5 hours per day, but there are so many flyers (which have to be collated with the letter mail) that it’s averaging 7.5 hours, which also includes parcels. Then, I found out yesterday that I won’t be back on my usual 4-hour suburban route next week, and I was supposed to be on that one until August. They apparently want me to “reach out” to other post offices to find more assignments. I have no idea what they’re doing, have been doing this for about ten months, and still have no permanent status, benefits, pension, or route of my own.