Charged for ADSL I don't want & haven't used

Web Africa was recommended so I went ahead and completed an application for a 2 meg uncapped account. I then followed this up with an enquiry about how long it might take. No response to my enquiry other than an automated reply. I then asked what the procedure would be with my Telkom ADSL account that still had an amount outstanding and what I should do about this - in other words some guidance on how I should proceed. No response whatsoever. I followed this up with many emails asking for a response and only got ONE mail back from a support department telling me they had forwarded my mail to the ADSL support department. At this point I decided this was not a company I wanted to do business with and sent an email to Afrihost enquiring about their uncapped 2 meg ADSL. Absolutely amazing response within hours. Every question I asked was answered in an enthusiastic and helpful manner and I signed up with them. I then informed Web Africa that I no longer wanted the uncapped a count with them and you guessed it - no response from them at all. I then tried to delete my bank details but couldn't but I have still been charged for an account I haven't used at all.