AFRICAN BANK PRESCRIBED DEBT NEED PRESCRIPTION LETTER

I had an account with African Bank back in 2013 and lastly paid that account on the 31st May 2021 and i raised Prescription on both accounts i had with African Bank. One of the account was bought by Nimble Group and it is now finalised as NImble sent a Prescription Letter. African Bank still try to revive a prescribed debt. I do not owe African Bank a cent and they need to remove this old extinguished debt from my name.