When you buy a monthly recurring script, you can cancel it either through the osbot client area, or through your paypal control panel.
You can try posting in the refunds section; but I don't know if it'll be of any use
Not sure what you're saying but.. If its withdrawing bloods, it's because they're needed for the settings you specified. If it's depositing them, then it's because they aren't needed, or are in excess according to minimum casts.
There was a decanting bug. I only heard reports about it being broken for combining stamina potions, but I reckon it hadn't worked for combat potions either. It should combine all potions now, though.