CallShortcut cydia tweak will let you call a person from the home screen as easy as you would open an app.
You will no longer have to search through a lot contacts just to end up calling the same person over and over again.
To create a shortcut for a contact, all you need is to open the phone or contacts app and select ‘Add to Home Screen’ when viewing a person.
CallShortcut doesn’t force you to keep each contact after you have created a shortcut for it in the home screen. This means that it is safe to create a shortcut in home screen and then delete the contact. It will still function and call that person.