I have these from planning my last trip:
CRO 800# Try 1 800 828 0228...it worked for me the other day.
I've been using 800-492-6789
These are the numbers I have:
WDTC 800-828-0228
CRO 800-492-6789
DC 800-654-6347
I used (800)492-6789 to call CRO this morning.
Bill From PA