Paid-off cellphone on contract refuse other simcards after an upgrade

<p> Hello Peter, I am very upset with the service we get from Telkom Mobile cutomer service. My wife was due for an upgrade from Samsung S4 mini to Samsung S7. S4 mini has been working before she received an S7 from Telkom. As soon as she received an S7 Telkom Mobile decided to switch off/ block an old S4 which was on contract and paid off. Countlessly we contacted Telkom Mobile customer service to try an unblock the services of the old phone and we have been informed that it is not there fault, there phone has technical issues. How does the phone have technical issues as before she had upgraded the S4 phone was working well? We also went to eastgate telkom and they could not assist us as they mentioned that the phone was blocked my technical people from telkom. Now the S4 does not take any simcard and Telkom are failing to assist us, this old phone is use by me now and I am paying new contract for my wife phone. How does Telkom terminate the services of the old phone after an upgrade, i am even thinking of taking them to my lawyers maybe they will listen. We have never missed a payment and we expect good service from them. My wife Cell Number is ***, please contact her to get further details. We are not going to pay anything and we want this phone fixed. ID: *** 08 0, Tshepiso Mukondeleli Shandukani, this urgent, please forward this message to them.</p> <p> </p> <p>Kind Regards;</p> <p> </p> <p>Mahuna Mothiba</p> <p>Cell: *** </p>