I note there are five phones in Mexico City with that family name. I will edit my Kalarm message for Rebouch and also look next weekend for that name in the Puebla phone book. You did not give a time line, so I do not know if there would be reason to assume they might well have moved (which is reason I look for names in the only phone book I have in front of me.) And, at this time also do not know if Amozoc phones are included in Puebla books.
Also, many people do not have phones, and those who do have them may not be listed under that family name. For example, for those who did not know this, women in Mexico do not take their husband's name, except at times as an add-on to their own name (hername de hisname). so if the woman goes down to the phone office and signs up for the phone, it will not be listed under the husband's family name.
And, many existing phones simply do not get printed in the directory. It is a real mess at times.