Not getting through to customer support

Good day<br> <br> I have been trying to get through to customer support from the 2nd of April to cancel my contract but was getting cut off all the time, I also send numerous emails to no avail.<br> <br> Eventually when I got through to them, they told me that they will request a call back from the department which works with the cancellations.<br> <br> That was on the 16th of April and no one called me yet. Now I ask you who are going to pay my bill for that contract the end of the month?<br> <br> I will not pay it due to the call centre's incompetence to provide efficient customer service.<br>