Good service belong to the paying party

I would like to make it categorically clear from the onset that I am extremely annoyed by the bully tactics that Auto and General together with Glassfit Aeroton are applying. Windscreen should have fitted on the 1st March 2019. I have been given round arounds and still waiting for their call back. Formal written complain submitted to Auto and General on 04 March 2019 and to date there is no response despite being promised to be contacted within 24hrs. I feel I have needlessly been subjected to a 'systematic campaign' of incompetence, due to Auto and General omissions to take 'reasonable and practicable steps' and or implement any 'preventative or protective measures' to ensure proper protection environment free from bias decisions. I wish to bring to the 'directorships attention their fiduciary duties', with express the fact that it is the directorship who are legally responsible to champion, promote, communicate, and implement SERVICE LEVEL AGREEMENT policies and procedures down the chain of command to their 'ordinary employees and suppliers'. I am extremely annoyed by your pathetic service including your partner Glassfit Aeroton. One will think that A&G should by now know and note that a windscreen is a safety feature on a vehicle and not a luxury.