Caring somebody please help

I have a data contract with Telkom, initially I could buy Free me data bundles and with the minutes I could make calls. My account was in arrears and it was locked. I then made means to make it up to date. My problem is this when I buy Free me bundles am unable to make calls now not even to the call centre. I have escalated the matter and no one bothered to contact me and ask if the service is working. I just received an sms telling me that the case is closed. When the service is still the same. Can a caring person assist me in resolving this matter.

Kindly let me know when is my contract end date.

Another issue that have is when I was called for an upgrade I was told that the modem (I received then) was free, however when I checked my invoices actually being charged for it. Please listen to the call and refund my money.