Q. Equifax A.R.S., a debt-collection agency, sent Donna Russell a notice about one of her debts. front of notice stated that "[i]f you do not dispute this claim (see reverse side) also wish to pay it within next 10 days we will not post this collection to your file." reverse side set out Russell's rights under Fair Debt Collection Practices Act (FDCPA), including that she had thirty days to decide whether to contest claim. Russell filed a suit in a federal district court against Equifax. Court ruled against Russell, who appealed. On illustrate what basis might Russell argue that Equifax violated FDCPA?