I know this isn't an issue that applies to most flyetalkers on the LH board but for one-way M+M awards, which I have to book via the US call center as a US based member, the availability online does not match with the availability of the contact center. They claim that the availability comes from two separate inventories (why?- O is O), which basically means that you are stuck booking a RT even if you only want a OW award. Oftentimes they have to clear it through Germany but this takes multiple phone calls, speaking with supervisors and the stress of the space being taken by someone else.
I know a small point but since it relates to contact centers, I would say why do they advertise (via the phone) that mileage availability has a website inventory that is different from the contact center availability.