See Annex I.
1.
2.
3.
4.
1.
2.
The amendment or cancellation of the contracted services shall be made within the first 15 days of the month preceding the one in which the
services were provided.
With regard to the three instalments payment method, the cancellation of the services corresponding to the next instalment shall be made 15 days
in advance of the beginning of any such instalment.
With regard to the one-time fee payment method, it will not be possible to cancel the contracted services.