Hi Cynthia, I understand your frustration and sympathise with your situation. However, a quick check of the internet shows that the manufacturers have a history of safety violations regarding their cylinders.
Given the available data, I sincerely doubt there is any conspiracy and, as such, I would be concerned to have one of these tanks on board my boat. Users are warned of imminent danger in the continued use of these cylinders.
I contend that the 'someone' who wanted the company 'out of business' is the certifying authority which has become frustrated by the manufacturer's either refusal, or inability to comply with the standards required to guarantee public safety.
I think it is better to find out now, rather than to come to the full realisation that something is wrong whilst flying to bits following a gas explosion aboard your boat.
I hope you get your money back and can find a good safe alternative without having to rearrange the current gas locker.
"if at first you don't succeed....Redefine success"!