Incorrect bill

<p>This is now the 4th time and still nobody phone me back to assist me . . . . what a waste . . . .</p> <p> </p> <p>On 25 and 29 May 2017 Busi and Laura give feedback that they will get someone to phone me, on 19 June 2017 Busi again reply - still nothing.</p> <p> </p> <p>Is there any other steps that I can follow to enable someone/somebody to assist me with this regard, it seems that they don't want to assist but every end of the month they just expect from you to pay the bill and ask interest. </p>