Callling an SP with a phone that a wife may use is, to put it politely, HIGHLY ill-advised. Screwtape1963 was a little more blunt with his wording. I totally agree with his comments.
Quoting a couple of the SPs here:
Alex - you really have to set things up in such a way that YOU protect your privacy
Alix - I try not to leave my fate in the hands of others
Ultimately, it's up the to caller to, pardon the pun, protect their own ass.
Ideally, as another pooner has stated elsewhere, you may want to invest in a cheap pay as you go flip phone for calling SPs. Turn off the ringer (or stash it) when you're in mixed company.
ound: