Bad service

I am very disgusted with FNB, my Dad has been using their smart phone for more than 2years, the contract ended so he ported his number to another network as he didn't want to renew the contract anymore. He went to the FNB branch but couldn't get any help, since he wanted to port to MTN network he was advised by the FNB consultant to go port his number to MTN and then everything will be fine afterwards. He then ported the number but still the phone couldn't work. He went to FNB branch again and they say they are going to send him unlock code to unlock the phone, they did send the unlock code but the phone wont take it because its now blocked. When we call the FNB today we were told to unblock the phone will cost plus/minus R950. I am very disgusted because if The FNB Consultant gave my Dad the correct information from the first time the phone couldn't have been blocked, my Dad was send from pillar to post, up and down given wrong information, now my Dad doesn't have any phone to use because his phone is blocked.