[Macbow]

That's unlucky - I would try the warranty first as Windknot suggested and get a replacement. Even the best manufacturers can get faulty product every so often and Ragim have a solid reputation.
I had a flatbow delam between the riser and the first lamination on the back of the bow - the previous owner used superlight arrows which I reckon contributed to it. I noticed the damage only because there was a slight vibration and noise when I shot it as the crack only showed when the bow was drawn - three inches long and wide enough to slide a credit card through. I pulled the bow till the crack was at its biggest and filled the gap with superglue and clamped it together overnight. I used the same credit card to order a new bow and sold my old one very cheaply to a guy on the understanding that it was broken. That bow is still shooting hard and well two years on with no signs of coming apart. I was later told there are better glues that I could have used.
Obviously a new bow is the preferred option but chances are it could be repaired. If neither is possible may I suggest you give Andy Soars at Blackbrook a call - his details are on my homepage. He is a very fine bowyer and a superb archer. The Zeta is a truly excellent bow at a very fair price.