2 weeks - $9,000.?????

I took the online A & P class that is supposedly geared for working people. Wrong! This class requires way too much for people that have real full time jobs and families. I withdrew the second week. They just sent me a bill for $9,000.???!!!! NINE THOUSAND DOLLARS??!! For 2 weeks, 1 test. I am furious!! This is not right, bad people, they are a high pressure sales team that get you before you really know what happened (like timeshare sales!) How am I supposed to pay this?? This is extreme....there has to be something I can do. They are definitely not Christians like they claim to be!! Help