Account details incorrect

I updated my details on the website (Logged into my profile) and updated my address and email address as my previous email address was closed. The website displays the correct email and shipping addresses. but seems like you guys have separate databases and the website doesn't update the main db. So i phoned today. The client services officer was shocking. and when i did ask what his name was, he put the phone down. Due to your databases not in sync, caused me not to receive statements via email and I just paid what I thought will cover it but wasn't and of course, you guys are quick to add on late charges etc. Can we sort my account details out please and reverse the charges which if your databases were in sync, the account would have been paid correctly.