Notice Period

I utilized the R399- option with Telkom whereby I had the Telephone/internet option however as I was relocating to PMB I gave notice on the 02/01/15 (first business day of the month) of my intention to terminate my contract - the lady was helpful and I advised her that as I was vacating my flat on the 30th January I would like my service disconnected on that date. During the course of the month I received SMS's regarding my request and also received my statement for the month which I duly paid by the end of Jan. Lo and behold In Feb 2015 I get a further statement which included rental for February 2015 - I called Telkom to enquire about this and was told that I had to give 2 months notice therefore I was being charged for February - I went into the Telkom office at the Midlands Mall in PMB and was told by the lady directing the queue that only 1 month's notice was required but I was asked to speak to a Consultant however after waiting for 45 minutes I had to leave without being attended to. I do not think it is right that I get billed for February as I did not benefit this service. Please investigate and revert to me URGENTLY.