Poorest of service received

Good day To whom it may concern I have been in contact with the insurance company that I am currently with regards to the tracker that would need to be moved/ installed in the new vehicle that will be and has been purchased, the insurance company then sent a lead twice of which no one at Tracker came in contact with me, I then took it upon myself and phoned tracker and made the needed arrangements, the arrangement was then made to do the installation on the Saturday 7 May at 8am, all was fine until I was phoned by the installer (Keenan) at 8am, his reason for being late was due to him being at a client busy doing a test on an item, of which he then said he would be late by 30min, an half and hour went by and another 15 he arrived at 8:45, he did the installation of the tracker on my vehicle gave me no paperwork and also did not sign anything and said the certificate would be emailed to me, today is the 12thf of May and still I have not received any certificate, and on a daily basis I am receiving phone calls wanting to confirm a booking to install a tracker ARE YOU SERIOUS this is really the poorest service I have ever received from tracker and at the point where I will not refer anyone to you (Tracker)