A family of Microsoft word processing software products for creating web, email, and print documents.
Only Microsoft will be able to tell why the process is (sometimes) slow. Normally, it should be faster than 30 days.
Since you have successfully canceled, there isn't much more you can do. At least in theory, you can request a callback via the support chat at https://support.microsoft.com/contactus. However, users in the forum report that this may be a convoluted process which doesn't necessarily work.