Hi @Anonymous User
Don't you mean the 15th of April ?
You could try the email in this link guide article below because you are out of the country and can't phone NowTV directly.
Open the link below and click the black arrow next to "I want to cancel my broadband without switching" where there is an email address link to click on (don't know if the email address on the link is still working and being managed by the NowTV Broadband Team).
When you send the email make sure you clearly indicate what you would like done that you don't want to cancel but delay the work because you out of the country.
https://help.nowtv.com/article/how-do-i-cancel-broadband
