Line and ASDL not cancelled as requested by form.

On my account I do have 1 line in Wolseley ***) and another line to my daughter's flat in Bellville (nr ***). As well as an ADSL line connected to the *** nr. Before the 1st of December, I handed in a form for the cancellation of the *** line and the ASDL connected to this line at Worcester Telkom shop. They explained to me that I must give 1 month notice and that they will give this form through to Bellville to action. I now received an account for the line rental as well as the ADSL for the period 9 Jan 2016 to 8 Feb 2016. I spend almost an hour on the phone trying to get somebody to help with this and still no joy. The branch in Worcester do not answer the phone and I get voicemail. The call centre (10210) answered, but she put me through to 10213 to explain the conditions. Up to now I did not manage to speak to anybody at that nr. Really - how do I get this cancelled? I am still paying for a service which I cancelled months ago. My daughter is not staying in the flat anymore since the beginning of December 2015.... If I start the whole cancellation process from scratch, I need to give 1 month notice once again - more money for nothing......