My previous operator could charge me for not keeping to the current contract conditions (notice period and possible minimum contract duration), I agree to pay any associated charges.
In case this date occurs before the cancellation date stated in the contract or before the minimum duration of the telephone line contract, indemnity costs due to breach of contract will be charged and I agree to pay those costs entirely.
All contractual obligations must be observed in order to avoid any costs inherent to a breach of the telephone line contract.