When I had a similiar problem with an electricity I was told they had to contact me within I think it was 48 hours or I them had to ring the ombudsman back. You should have been given a time frame for the phone company to ring you. If they didn't give them another call and ask how long do you need to wait for them to ring them.
The ombudsman told me not to contact the electricity company as it would mean you were still chasing them up and they needed to get their act into gear.