They cancelled my line installation

I placed my order for a new line at my new house in November. They sent an SMS and arranged an installation date. They never pitched and when I followed up the Service department has no record of the order. The Sales department sent the technician to my old address, which I left 2 years ago. They never contacted me on my phone number provided - just cancelled the order. ***********! No wonder they are going out of business, if this is how the handle new business. It took an hour to re-instate the order with the call centre, and I now have to wait 21 days for the technicians. No recognition of their mistakes and no attempt to rectify it.