Gift code redeemed but Spotify charged me normally

[Snakepatra]

So I had a premium account and at 17/8 Spotify sent me an invoice to keep my premium subscription. I canceled the payment (10,99€) and I used a gift card of 10€. Then I recieved a mail that my account swapped to free subscription. Tried to change again in premium and they charge me 10,99€. I check payments and I have used the gift card correctly. Didn’t they suppose to charge me just the difference 0,99€ ? 
country Netherlands 

[Maxim]

Hey @Snakepatra,

Thanks for coming to the Community.

This might happen if you've had one or more failed payments or chargebacks from your bank or payment provider in the past. In these cases, the redeemed Gift Card would be used to cover the time you enjoyed Spotify Premium without actually paying.

If a chargeback is requested after a Gift Card has been redeemed, any Premium time from it would be lost.

I hope this clears things up 🙂