TELKOM CAN'T PORT NUMBER

I took out a contract phone on my name for my little sister last week, she wanted to port her current Cell C number over. On the very same day i ported my number from MTN to Telkom for a data contract, my number was ported within 4 hours. As for my sister, it's a week later and she is still on the Cell C network and not on the TELKOM network using her Cell C number. I have called the call center and was told to go back to the store, which i did last week Friday. I was given some or other story on the day and was again reassured that the port was now on...needless to say, as i type this my sister is still on the Cellc network. I was in the store today as well and they reassured me again that it will be done by 20:30. Nope, nothing has happened. Now my sister might already be attached to the phone but I am incline to return this phone and cancel this contract. This is ridiculous. Absolutely unacceptable. Please can someone at TELKOM who does indeed have a clue contact me before i go cancel this contract at the store.