Plumbcrew and Draincorp are useless

On the 8th march our geyser burst. Discovery allocated Plumbcrew to fix our geyser, the handed it over to Draincorp to fix it. We paid the excess to plumbcrew but draincorp came out. Draincorp opened the roof took the geyser out broke a tap and was about to leave because we didnt want to pay the excess again to them. We were held ransom to pay it. Last night the geyser blew. The water ran the whole night. Called draincorp , a lady who was half asleep who couldnt take my address down properly sent someone out after we relogged the claim..They said they will send out a manufacturer today to come out. I tried calling draincorp the entire day to confirm if the manufacturer was coming out, they refused to take my call. I called discovery insure the entire day to try and sort this issue out. The water started leaking again this evening and on the electricity cords. We now have no power. This is ridiculous . We called discovery again now. They sent someone out who said they cannot fix the stop valve tap that draincorp broke. Draincorp also broke a bandering on the roof. I need this resolved. Draincorp is not allowed on my property again. While you at it please send a discovery assesor out to my property. The last complaint on the previous two geysers fitted is also non compliant. Its fitted back to back against each other. Fitted by discovery's allocated plumbers. Plumbcrew is useless. Plumbcrews tel number also does not work.