Hello,
Having 8+ years of experience with object oriented programming in C++, I am confident of executing this project in 3 days.
I could not find the pdf in this post. However, going by your brief description, I could write classes derived from Account like Savings Account and Current Account, in addition to the classes you have mentioned. I believe this would make your project extensible.
Do feel free to contact me if you have any queries. Looking forward to hear from you soon.
Regards,
Malcolm
+91-9945826936