I left Canada and I didn't change my phone number. So, I can't verify my old account. I live abroad but I can't continue Tax Return with my previous account.

I believe I have a tax credit information in previous account. I want to get a code with new phone number. Since my phone number is longer than Canadian's, it doesn't work to change phone number with 10 digit numbers. Please let me know how to solve this problem. Thank you.