E143 error and no Extra view

Customer Number ***0 This client is 83 years old and I have helped him in setting up his explorer and extra view. Last week his extra view decoder packed up and I installed his new decoder. I phoned the call centre to activate the extra view but there was a repeated error of E143. The lady informed me that there was a computer problem and DSTV will contact client this never happened. Then I phoned again on Saturday and was informed again that there is a problem with computers. I phoned again today Monday 24-6-2019 and still no go DSTV uinable to assist. Please, I ask DSTV to get this matter sorted out Channel 100 works great but all the other channels have E143 error. I ask nicely please can DSTV sort out this matter for this poo old man. If there is a problem please contact me.