From what you've posted, I suspect caterpillars of some sort. They continually eat the leaves making it look like a large animal took a bite & eventually they eat the whole leaf and/or move on to the next one. CK the link below for info. If you search the forum & the home page you will find a lot of answers to your questions.

http://www.dirtdoctor.com/view_question.php?id=11

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The "soap" you use is normally chemicals, etc. Use real SOAP !!

Can you post an image of one of the leaves? Does it look like you took a hole-punch to it? Perfectly rounded edges? If so, I'm guessing leaf-cutter bees that use those bits of leaves for their nests. They do the same on roses. It's temporary and seasonal. Post an image if you can.

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Sandi
Texas Certified Nursery Professional
Texas Master Naturalist
Organic gardener
Tree-Hugger
Native Texan

I would mix up some Bioform (seaweed & fish emulsion) or Garrett Juice and spray everything, including the underside of the leaf, every 2 weeks.

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Sandi
Texas Certified Nursery Professional
Texas Master Naturalist
Organic gardener
Tree-Hugger
Native Texan

If you can get them replaced, then obviously do it. If not, then I have found the Bioform to be a good general pest repellant and it foliar feeds the plant. It certainly can't hurt.

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Sandi
Texas Certified Nursery Professional
Texas Master Naturalist
Organic gardener
Tree-Hugger
Native Texan

Assuming this really really is cranberry weevil damage, it is disturbing to to see the toxic chemicals being recommended by these people. Compost tea. Garrett Juice, neem, Plant Wash and the various plant oil products will work. If the beast is actually leafcutting bee, the control is harder because that is a hit and run insect.

I thought you were going to take the issue up with the landscaper?

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Sandi
Texas Certified Nursery Professional
Texas Master Naturalist
Organic gardener
Tree-Hugger
Native Texan