I'm surprised you can't get them with a 3/4" drive breaker bar and a cheater pipe?
In the spring Billy, Cosmo, Sweet and I removed a set of wheels from a truck for John, in a junk yard in a brier patch. It took us half the day, but a 6-8' pipe and they all eventually came loose. They were Budd wheels and did have left hand threads on the left. Some of them were extremely tight, took two of us bouncing on the pipe at once headscratch

Before you call the service truck I'd get a stout breaker bar and a longer pipe.

Grigg


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-