What happened to Witsa runner beans?

As I've posted before, I've hunted high and low for this runner bean for more than three months - in Grahamstown, Port Elizabeth, George, and Cape Town - to no effect. It's completely unavailable, with no why or wherefore. Which is a pity, because it's the only runner worth growing. Over my dead body will Lazy Housewife pollute my trellises again - it's a nasty horrible bean.

Well, I got an explanation of sorts today from the guy at Sunnyside Nursery - apparently Witsa has been recalled because of some or other mislabelling issue. He had to send back all his stock to the seed company.

The unanswered question, really, is how the heck? Is that the real reason? And when will it become available again? Have we missed a whole season?

Anybody with more details, please enlighten me?

Update 2016/09/06:

Still not available in Grahamstown.

I've been making do with Contender bush beans.

Update 2019/10/09:

Still not available in local nurseries or other places that sell seed.

BUT, I've been able to buy some from Livingseeds, who have come up with another, real [?] explanation, namely that the sole commercial supplier had died, with no-one to take over the business from him, leading to a hiatus in the supply chain.

Can anyone confirm or deny these stories? Or come up with another explanation?

Anyway, after about 5 years, I'm back in business!