They refused to fill my propane tanks. I had them legally and properly transported but apparently they say to many people don’t so they refuse to fill for people who know what they are doing

Go to a uhaul most of them will fill tanks under 10 years old

I believe most locations are switching to a swap out service. Very few places actually refill them anymore. Local hardware shop maybe?

I have always received good to excellent service

If your question is "does their customer service suck"? The answer is yes.