Fongo doesn’t make any promises that activation short codes will be received:
https://support.fongo.com/hc/en-us/arti ... ifications. Fongo support staff is also not obliged to respond on the forums, and volunteer moderators don’t work for Fongo. If you would like to ensure you receive an official response from them, you’ll have to submit a ticket.
There’s nothing further I have to add on this topic.