On air, unable to cancel

On air a company working with dstv is calling dstv clients and selling steaming devices They inform dstv clients that you can have the same dstv packige but at a reduced price, When you call dstv to change the packige you find out it is not the case. When you try cancelle on air the process is impossible, but the money demands still come, Please be careful. @dstv very dissatisfied client after being a subscriber for over 10 years