TELKOM LET NON SERVICE

I would like a contact person at Telkom who actually gives a damn. I was moved from ADSL to LTE because of cable theft in our area. That was two months ago.Since then I have had no access to the Internet. Despite phoning, physically going into the branch and more phoning not one thing has been done. I have asked to cancel the contract and they cannot even get this right. How do I get hold of anyone who can look into my problems. I am beyond desperate.