The product I purchased (BioChef Vacuum Blender Container + Pump Fits Vitamix) is not actually compatible with my Vitamix VM0185B model, the motor doesn't start. Order #12000000291. I want to return the package, but nobody replies on my e-mails or picks up my calls. Return policy is 30 days free, and I fall in to this term and hopefully somebody will have guts to respond to me with return pre-paid labels and instructions.