I used to spend $100-$110 a month to call my beloved ones using those shitty phone cards. They ripped me big time. I used raza.com and keku.com. Talking through those cards.. you never notice when an hour was spent and later checking on my log, it wasn't even an hour, they always rip you off by 10minutes or 2 min everytime you start a new call. They r damn fcking snitches..

So, I had them install wifi router and its one time investment, then after you can use viber to make call anytime. Saved hecuva money.

Don't ever think of spending on calling cards. For some emergency, they're okay but if you keep continuing to use it you'll be surprised how much money you spend a month.

And having them call you sounds reasonable but it's not practical for you since you are the one who's missing your mom and wanting to call her at your will.