Jabba contact not available

Good day. Yes two years ago my contract expired. i told Jabba i do not wish to go on with the contract. since then i still recieve the money and sms on my phone. no way to contact them. my phone with the sim card is ******. Cell C cannot help me report my phone and block my card. Jabba is the only people that can black list my phone and block or stop my card and help me with a sim swap. So i am stuck with this problem for ever. today attorneys called my husband for collection of outstanding money for jabba connect. they are not willing to give jabba connects number for us to black list the phone and sort the problem out.