Using your own router instead of Telus box

Hi!

We’ve been getting the run around from Telus customer service as we move homes and just wondering if anyone has first hand knowledge of this.

We are currently in a building that has fibre and have to return that equipment. Telus tells us our new place only has wireless home internet, no copper or fibre. (I don’t really understand how that is possible in the middle of one of Canada’s biggest urban centres, but they have confirmed this...)

My question is, they sent us two boxes. One is the modem that takes the SIM card, receives the internet from outside, and then outputs a Ethernet connection to the house. The other box seems to just be a wifi router. I’ve always just denied the router with our previous providers and it was clear you could use your own router with their modem.

Telus customer service refuses to confirm this is possible and gives us all these vague reasons. Are they just being shady to get their $20 a month rental or does the “wireless home 5G” setup really require you to use both their pieces of hardware? 

We have internet only, no TV. So it seems like using our own router is possible?

Any experience with this? Quite frustrating considering this was never an issue with anyone other provider I've had for the last 20+ years.