Trying to move/cancel service

To summarize the conversation over the last couple of months....

In February I asked to move - mweb says they did not recieve the request.

On 4 April contact was made to cancel the contract and mweb insisted that there is a cancelation fee.

While trying to resolve the issue mweb kept on billing even though they recieved request to cancel and on going query about the cancellation fee and outstanding amount.

Now I'm told that the contract will be canceled on 30 June and I will be blacklisted.

Out of the above questions arise.....

While query is ongoing you blacklist your customers? You now canceling the contract on 30 June...why not in April when you confirmed you received the request?