Mweb insist on dragging out contract

For a number of years I had a Mweb 3g connection and Iafrica E mail address. After the second two year contract expired I realised that I am paying double during most months.It would seem that the 3gig data bundle now only became 1.5 gig during business hours. At the same time the E mails became so slow as to be virtually useless and was replaced by a G mail account. In view of this we decided to find another service provider for the 3g connection ( R259 for 5gig) and after consulting the Mweb helpdesk, on 29 Jan 2015 I sent a mail cancelling the 3g service as the agreement stipulates a calendar month notice. This mail was acknowledged.<br> On the second of February a mail was received instructing me to cancel the agreement in My Products on their Account website.I rep**** that I have given written notice as per their agreement and any internal process is their concern.<br> On 9 Feb 2015 I received another mail instructing again to cancel on their Account site. As I tried this at the very beginning (and found their instructions to be useless as even the heading given does not exist) I feel that due notice was given and theirs is but a ploy to extract another months subscription.