So I did get in touch with them, at first because I was like “err I’ve been charged twice can you explain”, and they didn’t respond until the food arrived. (So then my email became, err why has this happened, this isn’t supposed to happen)
And basically they insisted their site was perfectly crystal clear, but would offer me the chance to return the food for a shipping and return fee.
They sent me a link to a page where the copy I saw would not in fact clarify, only confirm the assumption that you have from the start.
I also asked what I should have done to get the order the way I wanted, one delivery, then 120 days later.
They as yet they haven’t responded to that.
It’s not the end of the world all told, the food will keep and I can deal with the extra cost - but the whole order has just been the exact opposite of what a “repeat order” is supposed to achieve!