Sell process issue

Hey guys! 

First fo all, thanks for still bringing us one of the best freelancers sites on the web, I really love working in PPH, it was my first site and I get my first job here, so thanks for everything. I know keeping alive a platform like this is a hard work. 

I just want to post something that I think about the sell process and I know is not your fault at all but the clients fault -maybe-. So many times I write on proposals, send samples or even make creative ways to get the clients attention and there´s a lot of times that the clients just dissapear, they don´t see the proposal, they don´t write comments, they don´t reject it, they just do nothing and the worst thing in this job is not to get feedback (positive or negative), either way we are losing our proposal credits spending them into nothing. 

I´m no talking about get the positive answer of a client (That depends on me), I´m talking about at least receive the "rejected proposal message", the answers on the comments or something that could say that the client still alive. Also one day I was preparing a proposal for a client who said "30 days for the proposal" and I took about 2 hours to make my proposal (I´m not a robot who sends the same copy/paste proposal to everybody) after the 2 hours the job was closed.....???? 

As I said, I know this is not on your hands but I just want to comment this to see if you guys could come un with an idea or maybe a possible solution. I know this is not just happening to me because every job with messages in the message board has no answers at all, and I´m talking about a lot of people asking messages. 

Last month I spent all my proposal credits in jobs and nobody answer, nobody saw it, nobody do nothing, no reject it, no approval, no notifications if other designer get the job, no nothing, just like the client wasn´t there anymore. 

Well, I really appreciate your time, thanks a lot. 

Regards.