Nope, calling is not the right strategy in this case.I hear you and you are absolutely correct. I called them 4 times by now and the last phn call the customer service lady with a very rude tone said I see that you have been calling many times. Theres nothing I can help you with you are not the rerperstative on your parents file. Good bye
Call connects you to an agent (not a Case officer), that's it, nothing beyond that. Beyond a point, you will get "your application is within the normal processing times" and they are correct in that response.
On the other hand, something sent by webform needs to go in the actual application file. Someone needs to look at what you have sent and take action on it and the application file...