Internet connection delay

Hi, We took a new connection for our new home. they have provided the wiring and stuff so fast. I appreciate it. But they need to connect the main line to provide the internet. for that need some underground work. its been 3 days every call with the customer service say same answer that "technician will be coming and work will be done in 24 hours" . "I am sure they will fix it " bla bla bla... but they don't send any email regarding the information of technician arrival timing  . I am still not sure how long they need and why they are not providing us any proper communication and conformation. I need to move in and not internet to work.