need to arrange seasonal hold from abroad

I'd like to set my holiday home to a seasonal hold as I cannot get there due to Corona for months and it looks as if this will take while. After being 95 minutes in an online chat with Xfinity, they told me I can do that but need to call a 1-800 number. I cannot do that as I am abroad now and the 1-800 numbers do not work from here.

Does anyone know how I can reach Xfinity and put the hold in place?