bad service

Good day I have a problem with dish installers in our area. I called one field service to install extra view , by then i was not at home when he install it he found my son. He didnt leave dish and other equipment it is only the box, thus i cant install it somewhere since there is no extension and dish. Last month i upgraded to explora 2 i called them again they came without extension knowing that there is an existing dish. i demanded my things because i want to install the other at home, they gave me dish and arm to hold it and they promised to bring me extension till today they didnt. their cellphone is on voicemail. fortunately i have his accredited number which is ********** 1mc, the name is Mpho. i will appreciate if i can be assisted on this issue.