Nokia 3110classic phone
Unable to delete one inbox message

Delete the interrupted messages

I can't able to delete the inbox hidded messages

Already i deleted all messages in my inbox. But i check the inbox memory it shows 4.5kb memory available and 5 hidded messages.

I delete the all inbox messages means it shows DELETED INTERRUPTED

Already i got 3 times in this problem and that 3 times i was serviced my mobile in nokia care

But this time how can i delete that messages myself

Pls help me any secrete code.