Cancel your Quickline subscription by mail
For Quickline the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. Letters to Quickline go to Wettingen, Switzerland.
Let Postbye cancel Quickline for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Money-back guarantee within 10 business days.
Postbye is not affiliated with Quickline.
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- 2 Quickline cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Quickline by mail
Note your account details
Have the account number, the phone number or service address being cancelled and the name on the account to hand. The details in the letter need to match what Quickline has on file.
Write the cancellation request
Postbye writes the letter in German from our German template, because Quickline's address is in Switzerland. It opens with the subject line “Betreff: Kündigungsanfrage – [your name]” and asks Quickline to end the subscription, stop all further charges and confirm in writing.
Send it by certified mail
Send it certified to Wettingen, Switzerland, copying the address from the next section letter for letter, and keep the receipt slip.
Save the tracking record
It shows the date Quickline received your letter. Check your next statement: no Quickline charge should post after the cancellation date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Quickline cancellation letter goes
Quickline can be reached by post at Hardstrasse 235, 5430 Wettingen, Switzerland.
The postcode 5430 belongs to Aargau, Switzerland, so this is where the envelope is delivered.
The letter is addressed “Sehr geehrte Damen und Herren,” and its details block uses the labels Kontoinhaber, Hinterlegte Rechnungsadresse and Hinterlegte E-Mail-Adresse.
Prefer to write it yourself? Use our letter template
Every address we hold for Quickline, with the envelope wording
Before you cancel Quickline, check these
- Ask for a final bill in writing and return any rented equipment by tracked mail.
- Check for an early-termination fee or a remaining equipment balance before the cancellation date.
- If you are moving to another provider, keep the line active until the new service works, then cancel.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Quickline for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Cancelling a phone or internet plan
Phone and internet providers tie cancellation to contracts, equipment balances and notice periods, so the request should name the exact line or service and ask for a final bill in writing.
A mailed letter is slower than a phone call but it is the version that proves what you asked for and when.
Quickline cancellation at a glance
- How Quickline accepts cancellations
- By mailed letter
- Mailing address on file
- Quickline Hardstrasse 235 5430 Wettingen Switzerland
- Country
- Switzerland
- Letter language
- German (template de)
- Category (from the company name)
- Phone & internet
- Added to the database
- June 19, 2026
- Data last checked
