Globe business account postpaid

Back in 2019, my gf (now ex) gave me a postpaid sim under a business account. Recently, my phone died and im unable to access my e-sim. I went to globe to have it transferred to my new phone but, unfortunately, they told me na dapat si ex ung mag asikaso.

Now, im thinking of letting go the account na lang. But what will be the process on this kind of situation? Ayoko na din makita/contact ex ko.

Should I just stop making the payments and wait for the account to be terminated?