The property next to BLT is a retirement home for elderly residents called Willetton Waters. Some of the residents are also BLT customers who regularly attend the BLT gym for various cardio and other exercises. Willetton Waters provide comprehensive services, including accommodation, meals, medical assistance, and recreational activities. The retirement village has recently introduced a new fee structure that combines a base rate with additional charges for services like laundry, transportation, and recreational programs. Dawn, an elderly 83 year old has recently moved to Willetton Waters. During the admission process, she is presented with a contract which has the new fee structure. However, the language used in the contract is quite complex and the legal terminology used is quite unfamiliar to Dawn. Dawn signs the contract without fully comprehending the financial implications. After about 3 months, Dawn's family notices that her monthly bills have increased substantially due to the additional service charges. When they inquire about the charges, they find that some services are being billed at exorbitant rates. Dawn is quite upset and, while at the BLT gym, mentions this to Jim.

Explain clearly the legal issues involved in the facts above. Provide adequate analysis on the application of the legal concepts and principles supported by relevant provisions of the Australian Consumer Law and relevant cases.