Final answer:
To handle a situation where a customer has been wrongly overcharged for a withdrawal fee, contact the bank or financial institution and explain the issue to their customer service representative. Provide evidence and documentation to support your claim. Remain calm and polite throughout the process.
Step-by-step explanation:
If a customer has been wrongly overcharged for a withdrawal fee, the first step would be to contact the bank or financial institution where the transaction took place. Explain the issue to their customer service representative and provide any evidence or documentation to support your claim. They should investigate the matter and if it is determined that the customer was indeed overcharged, they should refund the excess amount.
In some cases, it may be necessary to escalate the issue to a higher level within the bank or even seek legal assistance if the matter cannot be resolved amicably. It is important to remain calm and polite throughout the process to ensure the best possible outcome.