In the case of IHEANACHO V. UZOCHUKWU (1997) 2 N.W.L.R. (PT. 487) 257 AT 268-270, H-A, the Supreme Court set out the procedure for recovery of premises as follows:
“A landlord desiring to recover possession of premises let to his tenant shall:
a) First, UNLESS THE TENANCY HAS EXPIRED, determine the tenancy by service on the tenant an appropriate notice to quit.
b) On the determination of the tenancy, he shall serve the tenant with the statutory 7 days notice of intention to apply to court to recover possession of the premises.
c) Thereafter, he shall file his action in court and may only proceed to recover possession of the premises according to law in terms of the judgment of the court in the action.”
From the above: since your tenancy had expired as you mentioned, the landlord was entitled to skip the notice to quit and directly serve you the 7 days notice of owner's intention to recover possession instead of delaying on Quit notice computations.
However, your inquiry is not clear as to whether it was a lawyer's notice or court notice or court judgment as the circumstances were not clearly stated.
In any circumstance, if it was not a court judgment and you have very valid reasons to remain after the seven days notice you could apply to state your case. Your landlord cannot eject by force / selfhelp.
However if the case has already gone through the Court and an unappealed judgment has been given against you, it is then advisable that you comply by surrendering possession lest you be held to be in contempt of Court.