1. You cannot avoid being sued for overdue credit cards just by paying back 100 yuan every month.

2. Detailed explanation:

a. Overdue credit card repayment is a violation of the contract, and the bank has the right to take legal measures to recover the arrears.

b. If you cannot repay the entire overdue amount on time with only 100 yuan, the bank may continue to add late fees and interest.

c. The bank can recover the debt from you through legal means, including applying to the court for enforcement, freezing property, etc.

3. Summary: Repaying only 100 yuan per month cannot avoid being sued, and the overdue amount may continue to increase.

4.

Extended information: Overdue credit card debt may damage your personal credit record and affect your future borrowing ability and credit score. It is recommended to communicate with the bank in a timely manner and formulate a reasonable repayment plan to pay off the debt as soon as possible to avoid further legal disputes and credit risks.