Refund = Payment?
 

Okay, odd situation here:

Last month's bill for me was, say, 2k dollars. I made a refundable UA purchase this month, got the full refund, now my "payment due" (to pay last month's balance) got lowered because it treated the refund as a payment towards my bill due and not as a refund. Is that how it's supposed to work? Wouldnt that mean that say, I dont have the funds pay the monthly balance at some point, I can just make a refundable purchase and cancel it to cover the "missing" amount and delay having to pay for it by a months, or theoretically for as long as I want to?

Maybe but it might trigger a financial review.

I'd ignore the reduction and pay more - as if you didn't make the purchase.

Yes, you can get extra 30 days float on the money this way when you get a refund now and then. I don't think doing it one time will trigger an FR if you are an established customer. However, like puddinhead says, this is a known way to abuse the system, and it could trigger an FR, especially if you do it frequently or for large amounts.