I worked at a bank so I will help you discover the answer with my experience.
Formal institutions of credit are neccesary to maintain a balance in economy, these institutions are sometimes used by the goverment to invest in projects of infrastructure, education or health by asking for big loans.
Role and functions played by banks Some banks are private institutios, however, some of them also play a role with the goverment, and what they do is keeping track of the populations economy, and increase or decrease their taxes according to the balance and demands.
Credit scheme of the surveyed bank Asking for a credit has a lot of requirements, the main ones would be having a stable source of incomes, and having a good credit life with other institutions.
Terms of credit Getting in contact with the bank will give you the conditions.
Suggestions and recommendations to improve the functioning In the bank I used to work for, an area of opportunity would be been more wise with the schedules as there were not enough agents to handle customers during the pick hours.