Open Letter to Virgin Atlantic Flying Club

Dear Virgin Atlantic

3 years ago I was very exited to sign up for your miles program - I even signed up for the virgin amex card. I now have over 180,000 miles and yet I am unable to spend them!! I have tried to book from san francisco to london so many times I have lost count, calling 6 months ahead, calling 5 months ahead - all with no result. earlier this year you announced that we could now use our Atlantic miles on Virgin America. Wohoo I thought! I would finally be able to use all these miles!! But No!!! again you never have any seats available - ever!! my theory is that because I always travel with my family - there are 4 of us -  you never have enough allocated seats available on a single flight, thereby eliminating anybody traveling with a family. 
I feel like I have been defrauded by you! I am sitting on this mountain of miles that I am unable to spend. If I had saved miles with United this would be a non-issue - I would be able to book what I want when I want.
It is disgraceful that a company who prides themselves so highly on customer service can shit on their loyal costumers to this degree.

btw I am publishing this open communication to you, and any answer you might have, on the travel blog I happen to be a writer for; Im sure my readers will be very interested in hearing about your customer service.

Kind regards

Nina