making appointments and not showing up

I ordered a dsl line to be installed last year October. I waited patiently because the infrastructure was not there. Now when the project is finally completed they made an appointment to come and install on Monday the 25th. they could not give me time so i took the whole day off work so i could be there for them to install. They did not show up. They sent me another sms saying that the technician has been dispatched, i left work early and AGAIN no one showed up. I don't mind waiting for the installation but this blatant disregard for someones time is ridiculous. <br> This is shockingly horrible service.