INCOMPETENCE AND *****

I purchased dstv at PEP stores in Oudtshoorn and was given an Installer by the name Chris to do the installation on the 16th of July. They installed the dstv and left it up and running to my surprise on the 31st July it was disconnected. I went to the dstv satellite in Oudtshoorn a lady by the name of Jeannette was very RUDE and told me that in South Africa there's nothing for free i was suppose to pay upfront the PRORATA of R194 and the R399 for the compact package. She was so mean. I left and phoned Dstv agent about this matter and was attended by 3 different agents who told me that i needed to pay a sum of R666 , the other one R429 and the other one R362. I asked them how was the dstv activated from the first place because if that installer followed their proper procedure of installing the dstv and phone their side to open the dstv i would not be sitting with this problem. Im only getting paid on the 15th and that was the reason i bought the dstv on the 15 and was installed on the 16th. Now according to them i will have to wait until the 15th and pay on top of this monies the 399 which will be due on the 15th. They acknowledge that fault is on their side and this installer however i am the one who is on the recieving end. I emailed their helpdesk, and the self-service email address 2 days ago .until this far no-one has came back to me .