There are a few different reasons why your transaction is not being processed successfully. However, we realize the most common reason is that the bank blocked the transaction.
You can contact us via live chat or email us at help@tasonic.com and we will tell you exactly what is going on.
Alternatively, you can contact your bank directly to find out why the transaction is not going through. Usually, they will lift the block and you will be allowed to purchase the Topup without further issues.