Contract *****

My brother had x2 contracts with cell c, and both of then had to cancel or upgrade round about now, the one contract was upgraded without his knowledge, a samsungs S21 device was taken by the person and he has to pay for it, upon query with cell c about this they told him to open a case of ***** with them, still nothing regarding this case, they also refuse to give him the details regarding the upgrade, now the second contract he told them to cancel, which he just found out was also upgraded without his knowledge and he is not able to cancel these contracts. He now received 2 different reference numbers, but nothing is happening, he is speaking left right and centre to everyone but nobody seems to be able to assist him. Meanwhile he still has to pay for both these 2 contracts. This is ridiculous! Can anyone tell us the way forward on this? We are currently busy with advice from the ombudsman. Kind Regards