In Turkish language, there are two personal pronouns and therefore two different conjugations for the second person.

One is 'sen' for singular you, and the other is 'siz' for the plural you. In this script, even though all subjects are supposed to be second person singulars, they are addressed as second person plurals.

This grammar mistake is represented as an associative for a bank that could not see the difference between its customers; thus is unable to deliver custom made services, which is a big downside in Private Banking.