Installation error and 2nd time call out fee

I was dealing " Kelvin DSTV installer " who came and installed extra view , and now I called him again because not a month later the cable outside came out , and I cannot reach to insert it my self , he tells me he can fix it but have to pay again for a call out fee , if they did a proper job the 1st time around it wouldn't have happend , and am sure they over charged me as well for the installation which I have all records still , am not paying another call out fee for *********** installers which you MultiChoice need to deal with it and fix this mess ...