Its surprising that you didnt get any file number till now. Minimum sponsorship approval should take place in 27 days .
Just recheck all the saved forms if you have and check
1 If you have opted for email address all communications will go to that email. Check all the folders in email where you can find if any communication from cic is missing
2 your husband should call cic and ask them if they have any pending application with them . he can quote his client id while dealing with them, if its approved they can give filenumber
3 if nothing works out fr first 2 fill all forms and reapply again
ram