Hi, I'm Nathan.Sorry to hear that you're having trouble with this but I'll do my best to help you.
Are you able to dial any other numbers besides your mothers?
Was the *77 dialed on your phone, or hers?Who is your and her phone provider company?
Do you need more help with this?If so, simply reply back on this page.
Please note: You have already paid your fee to the site; I'd like to help you and provide value for that fee, but I do need to communicate with you here to do so.