FerrellGas review: Refused to sell me a tank unless I paid them to run a gas line to my house

They say I cannot hire a pluming company to run my 10' of gas line to a storage building they say only they can do it for 150 dollars then it went up to 250 dollars claimed there is a federal law only they can do it. I asked if they are licensed plumbers would not give me a answer. All I want is a new tank no gas I will get it tested myself. When I get it hooked up to one little space heater in a storage building, they still refused to sell me a tank unless I pay them and only then 250 dollars to make the connection said it is company policy now. I said you just told me it was a federal law that you have to hook this tank up. Then there needs to be a permit and a official inspection and only a master plumber can pull a permit not a delivery truck driver they were lying just trying to force me to pay them for a little bit of plumbing that I can do my self. I dont want any gas just the tank for now so I can run the line from the tank to the storage building I asked for the managers name and I was refused by some lady who called herself peggy and would not even tell me her last name. I said I would file a complaint and got hung up on