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The payment has been taken from my account.
- Not in this case, the amount has been reserved and will again be released in the next hours.
There is actually no need to reserve seats from Basel to Interlaken Ost, I do not know a Swiss who does that, unless one is travelling as a group with more than 10 people. The train offers enough available seats. Seat reservations are only recommended for panoramic trains, for some they are even mandatory.