If you are a customer service staff who is experiencing a bad service from a different company,turning the tables,you as the customer,what will you do?

Find out what is the problem with the company, why their transaction is bad. Try if possible to forward the file or transaction to other colleagues. Report to your boss and tell him/her see what is happening. 

Customer service is a best-practice function not a retaliation field

i will direct him to the do what i want using my client's handling method,