Promo failure

[Great]

Public Mobile: Data on us! We've added 5GB of bonus Canada-wide data per month for the next 16 months on your current plan.

Log in to My Account, go to the Subscriptions & Add-ons tab, and enter promo code **** under 'New Promotional Code' to claim your bonus. 

Limited time offer. One-time redemption. publicmobile.ca/sl/XbMFQF9Pr2

Conditions and exclusions apply. Offer subject to change without notice. Reply STOP or visit publicmobile.ca/sl/nFyrCFW8yf if you no longer wish to hear about Public Mobile offers.

I wasn’t successful in applying this promo and was billed 20 dollars looking for a refund 

[softech]

@Great 

sound like you have bought a data add-on and hence it was charged.  Proper way is just login My Account, go to Subscription & Add-ons page and add the Promo code

At this time, you will need to 

engage PM support for further assistance.  Please open ticket using Public Mobile Expert Messaging using your Community/EverSafe account.  Select Start a Chat to begin:
          https://expert-messaging.publicmobile.ca/guest/pre-chat
**You'll get email/SMS alert when agent replies. or monitor here: https://expert-messaging.publicmobile.ca/message-centre