Inaccurate Billing

I was on a contract with Telkom for 2 years in November last year said contract should have ended. I go into Telkom Liberty Promenade asking for confirmation that said contract has ended. The lady tells me no your contract only ends in February 2018. Ok I leave it... I continue to pay up until this month included to pat Telkom said contract... I get 2 urgent text messages saying please pay your account urgently otherwise we are going to hand you over ... I'm totally shocked I callTelkom speak to a consultant at there customer service she confirms with me that this should never have happened to me I should not have received these messages she also confirms with me that my contract did end in November last year and from then until now it has been on a month to month.. I told her that I never agreed to a month to month I wanted the contract to end and that it that... I told the customer service lady that I went to Telkom on Liberty Promenade and asked them they said no contract only finishes in February 2018... Totally unbelievable customer Seville these days as customer you are brushed off as if you are an irritation to the people that work for these companies... When is this nonsense going to end ... Get your billing and accounts system in order please