I am having troubles with a purchase from E-Power, any others with experience?

Has anyone used this online vendor? E-Power RC "We put the power in your model" http://www.rcmicroflite.com/ I placed a small order with them on 4/27 and still have not received it. I call but always get voicemail which they don’t listen to or if they do the choose not to call me back or email [...]