new customer wonder if i choose right

booked 28th June to have my internet installed byt the 29th of July to have time to make sure that i would not have any downtime when changing provider. on the 3rd of July i got confirmed that it will be installed on the 29th of July. on the 24th of July i wondered what was happening with the payment and the router and to make sure that all will be fine with the instalation in time. i didnt get any reply so i resent the same message on the 25thand got told that i will only get that when the line was successfully installed. Today the 29thi sent a message at 9.21 wondering what has happened, and by 12.46 i hadnt got any responce so i sent another message. then got told that as soon as the company that put in the line release it then they will sort the rest. i havnt contracted that company so that is your issue. shouldnt you have followed up on that before. when i then ask for a number to a manager to speak to, i get told they cant provide that. now i have been told they will come and look at the line tomorrow at 15.00. would really like to have a manager comming back and convince me why to use the company