1. In this case, it is true that the bank sent an investigation team to its hometown, which is a common way to solve the problem of credit card arrears.

The bank sent an investigation team to their hometown for the following purposes:

A) On-site investigation: The investigation team will go to the borrower's hometown to conduct on-site investigation to understand the borrower's family and economic situation, so as to evaluate the borrower's repayment ability more comprehensively.

B) Negotiate repayment plan: The investigation team will communicate with the borrower face to face, negotiate and formulate an appropriate repayment plan to solve the problem of the borrower's credit card arrears.

3. Summary: According to the above analysis, it is true that the bank sent an investigation team to their hometown. This is a measure taken by the bank to better understand the borrower's situation and solve the problem of arrears.

4. Extended information:

In addition to sending an investigation team, banks may also take other ways to solve the problem of credit card arrears, such as telephone communication and email notification. However, a more direct and practical way is to send an investigation team to your hometown, so that you can have a more comprehensive understanding of the borrower's situation and make a more suitable solution.

So, if your bank tells you to send an investigation team to your hometown, it is true. You can cooperate with the investigation team, communicate with them and try to solve the problem of credit card arrears. At the same time, you can also take the initiative to contact the bank for more help and guidance.