Learn Hardcore Arabic (Egyptian): البنك بيسال الضامن عن جهة العمل. - The bank asks the guarantor about the employer.

البنك = el-bank
بيسأل = beyis'al
الضامن is pronounced with a doubled d/ḍ sound because of article assimilation
جهة العمل is pronounced gihit el-ʿamal, not giha el-ʿamal

Why does بيسأل start with بي-?

In Egyptian Arabic, بي- is a very common present-tense marker.

So:

يسأل is the basic present form in Standard Arabic
بيسأل is the normal Egyptian everyday form

Here بيسأل means something like asks / is asking, depending on context. Egyptian Arabic does not force the same tense distinction that English does between asks and is asking.

Why is it written بيسال here and not بيسأل?

This is common in informal Arabic writing.

The more careful spelling is بيسأل, with أ for the hamza.
But in casual writing, many people simplify it to بيسال.

So:

بيسأل = more careful spelling
بيسال = common informal spelling

They represent the same word in this kind of context.