I've hauled for ground plenty. The people I dealt with were demanding, condescending and had a major superiority complex. I've never had good interactions with those people.
One time, I was running out of hours so I parked went into dispatch, gave them the paperwork and told them I was heading home. The dispatcher calls me back, I'm assuming there's an issue with the paperwork but she tells be she needs me to take another load to the ground facility local to us. I said there's no way I can do that and she says she's not paying me to bobtail home. Seriously. I tell her she's not paying me at all and the distance is pretty equal as my domicile is pretty much dead center of the two buildings and I don't have the time to drive by it and then back track home. She tells me to call my boss because I have to take it. I call central and simply say "good morning (dispatchers name) this is (my name) and I need to set up my trip from ABCD to EFG, I'll be bobtailing back" dispatcher says "got you all set up, have a good day and be safe". I hang up, tell her I'm going home and walk out.
Another time, I did a single run for them and they had the nerve to call me on my drive to domicile and tell me it wasn't enough. I said I was good with it and hung up.
They're used to dealing with contractors and intimidating them with threats of service numbers. They can shove that up their trailers and go somewhere with it. I avoided that place at all costs this year.