I purchased a nobelcom card to use from US to call Germany. the toll free no. they gave me didn't work: it was aither busy or got no answer.
I called them up to see what was going on, my call got connected fast enough: only about 5-10 seconds of waiting time. the lady on the other line explained to me that they were having some problems withe that particular access no, she did appologise a couple of times, and then gave me a local access number, told me it would even give me a lower rate (i did read about this on their site too, after the call). That number didn;t work the first 2 times I tried it - but after that it did. and I've been using it since.
So, nobelcom may have some problems occasionally, but to me they were fair and square. they solved my problem really fast, and now i have low rates and a good access no. I guess all's well that ends well.
They could use some improvements though, i hope they're working on that. I would definitely recommend this service to you people who make internat. calls. they're not perfect, but atleast they try.