details not being updated

I have asked King Price to update my details via email and telephonically which seems to be difficult. luckily only 1 more detail has still not been updated , I was told this is due to the system to being able to change a no to a yes? if this is true please provide in writing that King Price is aware that there is someone at my property during the day and wrong info is on policy due to King Price error and not mine. it states on policy incorrect details= incorrect cover which is why I am trying to have all info on my policy to be correct. I am still waiting for my policy via post, policy started in Aug and still no post? I am aware that post office was on go slow in March this year or so but should this still effect service now?