Terrible customer service. Trying to establish new prescriptions was impossible. They actually hung up on me. But, you have no choice. If your insurance uses them, you must use them if you want prescription coverage. Therefore, just like any insurance, they really don't care how they treat you.
Tried to buy a picture frame. It was very poorly packaged and of course if arrived broken via USPS. Called customer service and they refused to authorize return with paid shipping. To ship the broken frame back would have cost $49, which is more than the cost of the frame. Just move on to another vendor. It isn't worth your effort to try and do business with CB2.