CenturyLink-Phoenix poor customer service Nationwide

On 4/27/16, I called CenturyLink to order internet service.  I asked to have a technician install the modem.  An appointment was scheduled for 4/29/16 between 8 and 5.  I received a confirmation email confiming the installation and also a record of my bill which showed a technician installation fee of $59.99.  No one showed up today so I called customer service.  The person answering the call was abrupt and rude.  She told me her records show that I was scheduled for a remote install on 5/3/16.  I told her I received an email to confim everything and she said nothing.  I then asked for a supervisor.  She told me that my order had not been modified in their system and she did not know why I received the email---even asked me if the email was from CenturyLink.  I was so upset as I had canceled appointments and missed classes(which cost me money!!!!)  I canceled our order and will do my best to discourage others from doing business with this company