Pathetic Service

I am so sick of Vodacom and their pathetic service. I called a few weeks ago requesting that my contract be cancelled, due to early cancellation they were suppose to send me a letter but this was not received. I called back now to give them my moths notice and noted there is no email address which other providers have and this works well (what is wrong with Vodacom and their service). I then proceeded to call the line and waited an hour holding only for the line to be answered and dropped, this is enough to make a bad situation worse. For a company that is suppose to be so innovative they clearly lacking in many ways, who sits on a phone call trying to get service???? I will now withhold payment and see how long it takes for them to give me a call cause that they quick on the dial and I will not pay till I am helped.