Beautiful Barbados disaster

Ramblers Worldwide Holidays use Walk leaders that do not always know the area and therefore rely on notes, maps and other Walk leaders comments. Our easy graded walk took us across rocks next to the sea and involved a long trek along a beach to see a swamp that dries up in March. All this in 32C heat with no shade.
Crossing a particularly difficult rocky section I was hit by a wave. I fell and broke my arm. The company say that I was hit by a freak wave when actually the area we were in is a Mecca for Wind/ Kite Surfers. It wasn't a freak wave, it was the incoming Tide. In my opinion the modus operandi of using Walk Leaders who lack local knowledge is potentially risky.
In my view the Walks grading in the Brochure are inconsistent as is their footwear advice.
Barbados is a beautiful island but its too hot to walk in the mid day sun.