Unacceptable customer service - switchboard/accoun

1. the switchboard service is most unhelpful - very difficult to reach an agent for assistance<br> 2. this has been a problem from early days following becoming a client.<br> 3. when contact is eventually made with agent, there has been no follow-up and feedback about problem.<br> 4. I have an outstanding charge on my account which I dispute.<br> 5. this was explained to the Person Responsible in a telephone call made by her to me on 26 October 2015.<br> 6. during November and December I received multiple sms's on my cell phone regarding the outstanding amount.<br> 7. I called the company on the 8th December, and at the invitation of the electronic switchboard left a voicemail message requesting a response to my outstanding dispute.<br> 8. I have now received a further sms threatening disconnection of my car security tracker system. My attempts today to make contact by telephone have been fruitless again.