Do not just talk about international call rate, how about call quality? Anyone has problem with international calls (to China)?

I have been experiencing serious problem with international calls to China, not just one number, but all numbers (3-4 numbers) to China I call.

Very often, I hear from China side voice intermittent, but this is only a minor problem. The major problem is that when I call China, China side hears call from US side but when they pick up the phone they cannot hear anything from US side. I connected VOIPO customer and they did some routing change and things sometimes get a little better for a while and the problem comes back again!

I also get a lot of 1-minute charges due to all the failed calls!

This problem has been going on for months and cannot been solved! It is extremely frustrating! If this problem keeps going on, I want my money back!