Need more lorry parks

I have my mum and family who live in Mersham. I live near junction 8 of M20. It should be as easy as nipping on at jnc 8 and off at 10 of the M20. However I can't join at jnc 8 I have to drive another 15 minutes out of my way to jnc 7. That is if the M20 is open at all! Often I just can't get to her as the back roads are rammed. It's irritating as we desperately need lorry parks further back from Dover but there are too many nimby's who then moan about layby or antisocial parking. Also truck stops need to be affordable or no one will use them. We can't expect the people in Kent to put up with this alone.