I had the same CIBC chequing for the better part of the last 2 decades. As long as I kept $1000 in it, no fees. So I kept the account even after switching most of my banking to PCF.
I missed it in January, but noticed in February that I was now paying $3.90 in service fees. The teller told me the new limit was $1500.
Hasta la vista CIBC. Closed the account immediately and basically had to raise my voice to the teller as she wouldn't stop trying to convince me to stay. The amount of money a bank spends to gain a customer, versus retain a customer - quite a gap. The teller didn't offer me anything accept a lousy low interest savings account. Didn't offer to reverse the charges or anything. So over the last 5 years CIBC has lost my: savings, chequing, LOC, Visa, any chance to get our mortgage (even when we renewed). I now maintain $8.44 in my USD account with CIBC. You'd think they'd learn that they could have $500,000 (and growing) of our business if they simply didn't insist on a) charging service fees and b) changing the terms of my account with them.