Multichoice not providing services as agreed

Received Explorer on 12 February 2016. On 14 February 2016 supplier (Kalie Technologies Solutions) came out to install dish for DSTV Explorer. He could not install and requested extension which was bought on 15 February 2016. He arranged to come back 21 Feb and didn't pitch. Arranged again for 1 March and only arrived at 7:30pm and could not do installation because of the time. Arranged again for 4 March and did not pitch. He is not responding to calls and is not answering his phone. Several calls locked with MultiChoice and they don't do anything about it and are ignoring my plead to finalise the job. In the meantime I am paying for the package but are not able to watch most of the channels.