is there any way to prevent mobile phone account take over or highjacking of my Koodo phone number?

SIM Card Swapping:

Swapping a SIM card is a legitimate service offered by mobile phone carriers when a customer buys a new device, and the old SIM card is no longer compatible with it. Fraudsters can abuse this service with a relatively simple hack. In a SIM card swap scam, a fraudster uses social engineering techniques to transfer the victim’s mobile phone number to a new SIM card. The fraudster contacts a customer’s mobile phone carrier and impersonates the customer, convincing a call center agent to port the mobile phone number to the illegal SIM card. As a result, the user’s banking app can be activated on the fraudster’s phone. If the bank’s authentication mechanism includes text messages as a means of delivering one-time passwords, then taking over the victim’s number becomes an attractive way for a criminal to perform fraudulent transactions, add payees, or perform other operations during a banking session.