ADSL line rental

I sent a query to Mweb regarding our company's ADSL line rental charges. It seems that we are paying ADSL line rental with MWeb as well as Telkom. The initial email was sent on the 18 May 2015. I received a response from Mweb on the 25/05 requesting our Telkom accounts. I sent these to them on the 28/05. To date nobody has bothered to let me know what is going on. Mweb really don't care about their customers. Is my query being ignored because we have been charged all these years? I want an answer by next week otherwise I am cancelling our contract. I can get better, cheaper and more efficient. WE are paying R1,497 per month for a 1 meg uncapped line - its is a joke. They actually have the cheek to charge us R35 per mailbox where as we can get 100 mailboxes for R39 at Afrihost. Then if you want to cancel your mailbox, it takes them 2 months to do it and they keep billing you for it.