Beekman 1802 Bounty box auto-ship

I purchased the Bounty box back in March and I received it on 4 Flex payments. My auto-ship was sent out, when I looked I’m only being charged for 3 Flex payments. I called HSN and spoke to the girl at customer service she told me Beekman 1802 are the ones who changed the flex pays. She does not know why she said I would have to contact them. Who does that and not even send anyone notification that they’re reducing your Flex pays on something. I have lost a lot of respect for Beekman 1802 right now. Thinking of canceling my remainder on the auto delivery.