Blacklisted S3, not S4 & refuse to correct mistake

I bought the S4 on contract with CellC for my boyfriend. I reported tge S4 phone ****** last Thursday nite. I called from my Samsung S3 but the S3 has my cell c contract nr in it as the S4 had my boyfriends work phone sim in it. Why? The work phone went in for service/repairs. The lady I spoke to didnt want to give me the IMEI nr ova the phone, but said she will blacklist the phone on my behalf. I repeatedly told her that phone I'm phoning from has the contract nr in and the S4 is the phone that was ******. She confirmed everytime that she understood and continued to blacklist the phone for me. The next day my boyfriend went to police station to open case of ****** phone. He required the IMEI nr, so I called in again and the lady gave me the imei nr which I gave my boyfriend. Later that day he called me from his mom's phone to say he cant phone out or receive calls. I called back in and then only do they realise they black listed the wrong phone. They black listed the S3 and not the S4!!! ***?! How *********** do you want to be? Till today, they are forcing me to fill out a ****** form to unblacklist my phone that they stuffed up on. Hows that for service? Welcome toCellC