existing non expiring roaming boostter vs new 30 days expiring booster

The new booster would be exhausted first before you start using the old one.

​@MilkyWay are you a koodo rep. oficially working for Koodo? Can I use this message as a proof in case my old booster is exhausted first?

We are not Koodo employees. However, there has been a post a while ago where a customer was in a similar situation as you and seemed to suggest that the new booster is used before the old one.

If you need to confirm with a rep, you can schedule a callback through Koodo Assist and speak with them directly. https://widget.telus.tiia.ai/koodoprepaid/koodoprepaid.html

​@MilkyWay I did call them and they told me the opposite. old booster exhaust first, then the new one.

Let me flag a rep for you to get an offical response. 

Hi there ​@Oscar Uribe Unfortunately we cannot access prepaid services here, over the community. We would recommend reaching out to our dedicated Prepaid team in order for them to look over the account and the included add-ons. 

​@Darius Koodo where and how do I do that?

​@Oscar Uribe  You can dial *611 from your Koodo Phone or schedule a callback through our Koodo Assist.

You will need to request a callback in this case

https://www.koodomobile.com/en/help