It's been roughly 5 months waiting for Cra to review supporting docs from last year report

[dawes]

I had to provide some extra docs to avoid double taxation, though it's taking forever to hear anything back, they are just charging me interest.

Called CRA several times, they keep asking me to wait.

Is there any place I can call to report my concern?

Should I write objection letter to CRA already or wait for doc review?

It's significant amount and causing a lot of pressure and discomfort in my personal life, and now it's time to do tax again.