Account been blocked due to FICA department

I received a letter in the post requesting I need to go into a branch and FICA my Edgar's account, which I promptly did at Cavendish then a month later I try purchase at Blue Route and I'm told my account is blocked due to FICA not been done which made me fuming after I had already payed the balance of this account. We then sent FICA documents off again and still it is not done. And I can't get hold of anyone who can actually help me. I pay my account regularly and their is no reason this account needs to be FICA'd. I am so close to going into Edgar's and closing this account. You can't request FICA if you don't have people that can actually do their jobs properly.