Go up the chain and perhaps email the district VP, they usually have more pull and want to try and void issues from going on and on and on due to cost and productivity concerns. You may need to do a little digging around for find out who they would be. Here is what I found for central Calgary.
https://ca.linkedin.com/in/rod-wendt-85411017
I would emphasis the amount of time you and the Scotia have already spent on this file, none of it is beneficial to anybody. Speak to them in sales terms as that is what they know best. Something along the lines of "You want your sales staff selling and helping client's, not dealing with mortgage paperwork on business LEAVING the bank because I can't get decent renewal rate"
Continue to fight and if you think you have been officially wrong and have all your paperwork and everything in order, try going to the media. CBC Go Public, CTV Calgary, Global Calgary etc.
If that also doesn't suit you, than you can go up the chain via the official process. There is some work to be involved here as well. If Scotiabank screwed you over for $3+k in fee's, look at the time spent as how long you need to work for $3k.
https://www.scotiabank.com/content/d...-Complaint.pdf
Hang in there, I know it's not fun and hopefully your issue can be resolved to your satisfaction.