Not following the procedures /Poor customer servic

In September 2014 I went for a scan/X-ray .<br> On the day Bergman and partners sent me a invoice.<br> Until today 06/02/2015 we never heard anything from them about the account . To my surprise their lawyers call me for the funds with their mark-up on it.<br> This is poor customer service and also the post office was on strike so you would think they will do a little bit more to keep their clients happy. Do they make to much money To Care.?????