Dstv agency and accredited installers are useless

I have been experiencing E143 since 01 November 2021. I went to Dstv Agency at Mall of the North almost everyday but I cannot get joy of the service. They have provided me with accredited installers to come and check my connections but everything at my house seemed fine.

My secondary decoder is still not working. I went to dstv Mall of the North to complain about the situation. I even resorted to change both my Primary and Secondary decoders to new ones, changed the wiring and also the smart lnb. Still to date my secondary decoder will only work for few hours if not minutes when I contact dstv call centre. They would just relink my decoders and will work for minutes after I call them then it's off again.

It seems both the agency and their accredited installers are failing to sort my issue while they still debit my account.