Bug in the story

[Alicias12 0]

Hey i think there's a bug in the game , he told me to give him 100 000 000$

as you can on the picture he say that i dont have enought and i do 

[SilverAngelus 926]

He's probably scripted to say that, no matter how much money you have with you. You need the bike voucher if you want a bike.

[Starry Knight 753]

Correct

[Crystalrage 74]

You can get the voucher from the house where you stole the buizel.

[Lucifer Morningstar 39]

It's probably programmed as an impossible purchase despite the sale's pitch similar to an impossible battle. 
You need the Bike Voucher. 

 

Do the gang side quest at the old woman's house where you'll obtain a stolen Pokemon (either Ponyta or Buizel depending on which gang you joined) and an evolutionary stone (either water or I'm guessing fire). Once you've got both prizes talk to your gang leader to complete the quest. You'll be transported back to your gang's base where your leader will congratulate you on a job well done and tell you that the Pokemon is yours to keep. 
Now return to that same house. 
After a cut scene in which a cop interviews the old woman about the robbery, leave again and start walking away from the house. The cop come out and stop you to give you the Bike Voucher. 

Forgive the stray from the topic but does that scene change if you didn't find all the missing police officers in the Jasper and Beryl wards?