I have a truly unlimited plan that doesn't throttle - seeking advice

Hi folks, looking for your sage and sound advice as I'm currently in a pickle. Around 5 years ago I was fortunate enough to get the Scotiabank corporate plan from Rogers which provides unlimited data that doesn't get throttled (I've gone over 100gb a month with no issues - as I use it at home on occasion). I'm also fortunate enough to still have this plan as I guess they never kicked people off of it. (Fyi the cost of this plan is $65+tax) My dilemma is that in my current work place where I hope to be for 5+ years, I get absolutely 0 reception with Rogers - only Bell works there. I know people would sell an arm or a leg to get a plan like this and I know how valuable it is but it's like my boss said, "What's the point in having an amazing plan if you can't even use it?".
I've thought through many alternatives such as, getting a separate data only line to tether to my phone while I'm at work so at least I'm not disconnected all day but I know I would run into issues with the tether disconnecting and me not realizing it and missing calls, it's not very reliable.
I've called Rogers to confirm that I can't transfer my phone # to someone else but I can add someone like my wife to this plan but she would have to take over my # which won't work for me because all my contacts have my #.

I just wanted to throw this out there to see if anyone had any alternatives I haven't thought of before I regrettably let go of arguably the best cell phone plan around
If there really aren't any alternatives the plan I'm looking at which provides the most amount of data is the Bell EPP 50gb one for around ~$85+tax