I wanted a robot chassis for my Panda so I bought a 2WD Mini and a Rover 5 from dfrobot. It came from China in 3 days! Great! Unfortunately, the ROver 5 did not match the description - the description stated that each motor included quadrature encoders. What I received was marked on the box as a model with no encoders. I have written several emails to their sales and support addresses, and they have since changed the description of the product, but they have not responded to any communication. They must have received it because they changed the description within a day of me pointing out the problem.
Do any of you guys have any experience trying to contact them? Right now I am out a chunk of money and have no way to resolve the situation. I am so thankful for what great service I have had from GHI!