Regarding NOS internet contract

Please give me nos internet support email as I am relocated and want to cancel the contract if possible or any other option I mean if it can’t be cancelled then what the next option I have to apply but very sadly there is no way to contact nos and get support I tried to call them they speak Portuguese and they said that they would manage the conversation in English but nothing happened I sought email address on google and sent an email but nothing happen. I went physically to the office but it was also not helpful. Please provide me with right email address so that I can clearly explain the situations and resolve the issue. thanks