Is there a way to edit a contact number so it brings up the dialling pad, puts it into speaker mode and hangs up after X amount of time?

http://allgaierconsulting.com/techtalk/2014/8/1/why-and-how-to-insert-a-pause-or-wait-key-on-your-iphone

I found the above which lets me add pauses and stuff which is great for automation.

I'm trying to figure out a neater way to automate the process of getting my parents to find out how much money they have on their monthly mobile plans.