Trying to get my number back

Hi, on the 26th of February we had to cancel my mom's cellphone contract as she passed away from cancer, unfortunately my own number ***) got cancelled int he process as well, we tried phoning legal but got transferred from person to person and eventually we tried emailing legal again but that never got anywhere. <br> <br> all I want to do is to take control of my number and contract ***) while having my mom's number ***) still be cancelled. <br> <br>