Hi All,
I didn't realise you guys had responded (thanks).
I really don't know what they did wrong but it's so bad someone at my work was asking me what problems I had with my visa

guess my manager didn't think of it as a big deal and told the team. I was trying to explain I have been using my ILR in an old passport for about 6 years & there was no issue but they probably don't understand.
So I wrote a letter to my case worker last Friday explaining what had happened. She returned my passports & replied me today saying my application for naturalisation has been successful & I should receive a letter inviting me for my ceremony. I don't see any point in getting the biometric card now . I am now on leave from Monday till January so I hope my letter of approval will arrive & is sufficient for my employer for now till I apply for my UK passport .
Many Thanks
Nkechi