Nudebt/Telkom Idiots

My name is Muwanu Mlotshwa. Nudebt company keeps sending smses saying that I owe Telkom R1700+. I have never had an account with nor do I ever intend to have anything to do with Telkom because I know many people who complain about poor service delivery. There is a very cheeky lady who always insists I know about this and she tells me she will never stop calling me. I want Nudebt and this Telkom to stop calling my number I'm not their friend and I loathe this unproffessionalism. They must stop sending me messages too my phone is not a Telkom public phone . They are making me sick.