Any repairs would be done free, subject to the terms of your warranty.
If you want to take advantage of a loyalty offer, or if you have made a recent purchase and need support:
Sales line: 1300 135 604
Monday - Friday: 9:00 a.m. to 5:30 p.m. AEST
That is not a valid TomTom serial number. Your serial number is a 12-digit number printed under the bar code on your device. It usually begins with a letter.