The Neighbourhood is filled with customers, just like you, who give their time to offer help and support to other users. We have no particular insight to Telus operations other than what we have experienced, or surmise. We also have no access to your account information, so can only offer advice through the medium of this discussion forum.
If I understand your question, no matter what number you dial, you receive a message stating 902-982-6440 is not in service. You would likely be best to contact Telus customer support with this issue, as it appears to be with the switching for your phone, and not an issue which can be resolved by this community.
The Neighbourhood forum is a place for TELUS customers to ask each other questions, and share experiences and knowledge of TELUS products and services.
These forums are not regularly monitored by TELUS teammembers. If you are attempting to speak to a TELUS representative, please refer to the contact page: http://telus.my/1mKmPV