Hi Blue angel ..as per one 2 ka 4 and some other the interview date can sometimes take longer than 1 year. Until then they keep telling you that they cannot give you an interview date yet. It is good to order caips like royalzaib is doing to find out what the reason of the interview is. If the reason of the interview is that they think your marriage is not genuine then you start providing them with more and more proofs of your relationship ...pictures, visit, phone call records, long distance call records, skype call records,facebook, emails, letters, gifts ,western union and whatever else you can find to show that you guys keep in touch with each other and are very much a part of each others life on , ongoing basis.
It after the review of that stuff the Visa officer is convinced that your relationship is genuine they will take you off the interview queue. So please start collecting and sending these things to CHC with your file number on the package to add to that file.