Account Handed Over

I contacted MTN from the 20/05/2015 to get my bill but the lines were unattended using 808 due to Strike.I sent the email on the same day 20/05/2015 requesting the amount that I owe then i got respond that Please be advised that your request has been escalated to legal department to assist you further.On the 03/06/2015 I sent an email again that I am still waiting on Legal department to get the amount that I owe so that I can make payment and i didnt the response.On the 08/07/2015 I got an email from Customer Care stating Thank you for emailing Customer Care.<br> We apologize for the delayed response and for any inconvenience incurred. <br> I called the 808 number then they told me that my account was handed over to SSDA .....MTN sold my account to them instead of paying the outstanding amount of R780 I must pay them R4961.66 which i am not willing to pay.The fact that you guys were on Strike it has nothing to do with us as customers.I tried my best from my side to reach out to you and