Yellow balau hardwood decking - advice needed!

[Shutterbaby]

Has anyone had a yellow balau hardwood deck fitted? I have just had one installed and am not impressed with the quality of the wood. Some planks have black dots on, some look like they have been eaten by woodworm, some are split, some have already gone grey. I understand that some deviation in the planks is normal, such as colour variations, knots etc but I am not sure whether this much variation is normal? Please help! Thanks.

[pjal]

We had a balau deck put in about 5 years ago. Bit grey (and green but that's because we can't work out how to clean it up without a powerwasher - which makes it splinter). Welcome to pop by to compare with yours? PM me