Keep on paying

I was phoned by an agent of this company on 05/03/2015 asking about an outstanding doctors account since 2010. As I was not aware of what the problem was, I asked the agent for the details to be e-mailed to me so I can have a look at what I'm being phoned for. No e-mail was sent by them. <br> <br> On 02/04/2015 I was phoned again, being asked the same thing, just for me to again ask as before, please send me the details via e-mail.<br> <br> On 09/04/2015 I was phoned once again....same story as above. This time I phoned them and demanded that I get an e-mail with details so I could attend to this. <br> <br> Finally got the e-mails, but were charged for all the communications, after 03/05/2015. Is this now my fault that I did not receive the e-mail as promised? Why must I pay for their mistakes and lack of interest in collecting monies, they are phoning me for?<br> <br> Addressed this with Charmaine telephonically in which eventually some of the communication costs were taken off the bill. As it was a telephone conv only, I asked via e-mail to confirm the new amount payable. Heard nothing....paid nothing. On 20/09/2015 I get charged again for communication as I broken the settlement period. Unacceptable