need some help,

i made a mistake by hiring a contractor from hell, my house reno was supposed to be done in sept but was delay till today, due to many issues with the contractor, however, my house was a single phase and we decided to change to 3 phase when we wanted to renovate it, the application had been done a month ago and still no sign of connection for 3 phase.

does anyone knows how long does it takes for 3phase to connect?
or how to check whether your 3 phase is connected?

pls help thanks