I have been purchasing rock from a local supplier for the past 3 years. Never had a problem with their materials until recently. We were building a granite rip rap retaining wall that required 14 tons of rock. The area was not machine accessible. This supplier was well aware of what we needed and what we were building. They proceeded to bring 100-200 lbs. boulders. Told the driver that the material was way too large and now the owner of the supply yard will not take the rock back unless we can get it to them. If I had a truck that could carry 14 tons obviously I wouldn't have had the material delivered in the first place. Any suggestions on how to deal with this supplier?