If you go to Norther part of the country, you will see them. Those that are riding bikes, cars, buses for business there does not even know amount in English. You have to tell them in Hausa before they will understand you. It was strange to me when I first went to Northern part of the country and they are far more than those that speak English and Pidgin English.
This is so true; I lived in the North for a year during my NYSC service and interacted with most of the Hausa corpers, and they could barely speak or understand Pidgin. I noticed one thing among the Hausa: those who know how to speak English barely speak Pidgin, and those who don't understand English barely speak at all. Pidgin English is not widely spoken among the Hausa tribe.