Grammar fix

bank on

depend on something happening

To rely on something or someone to happen or help you, because you expect it will.

phrasal verbB2common

Hear it in context

Notice where the phrase sounds natural.

You can always bank on Sarah to help you when you need it.daily life
In my opinion, you can't bank on good weather for outdoor events, so it's important to have a backup plan.IELTS speaking

Pattern: bank on + noun/gerund

WrongDon't bank on to get a refund.

RightDon't bank on getting a refund.

'Bank on' + -ing or a noun, never 'to + verb'.

Patternbank on + noun/gerund

Choose the version that sounds natural in speech.

Stiff I would not rely with absolute certainty upon his attendance.

Natural I wouldn't bank on him showing up.

'Rely with absolute certainty upon' is wordy; 'bank on' is the natural idiom.

Words that usually travel with it.

Not the same as 'count out' (which means to not include or not expect something).