Telkom mobile dissapointment

Since October 2014 we have been trying to set up a telephone line at our new offices. Due to no land line access we were steered off to Telkom Mobile(we live in the city). we had a sales representative come to our new offices to asses the situation and he gave us a recommendation to use a 'cellphone system' to replace the land line system in our previous office. He said that they would connect the cellphone system to the existing land-line number so that all our old clients would be able to contact us on that number. For the Internet purposes they suggested a mobile data (Lte) system. We waited for over two months to receive these components after endless phone calls. Once we received the system we requested that the numbers be connected to the existing land-line number as promised. It is still not been connected and every time i try contact them the phone goes to voice mail and i leave a message , i sometime get hold of them using a different number. They promise the world, yet deliver nothing. They are the worst company i have ever had the displeasure of having contact with.