Multichoice and their ********** installers

I received a call from the agent offering me the DSTV explorer price lock with I accepted, they gave me the installer's number for me to call which I did and made arrangements with the guy to come to my place. On the 21st of March the installer came but however he couldn't do the installation due to some issues so he promised me that he will come back once the issues were resolved. We arranged for the next coming Friday which was the offical day of the lock down. I called him to reschedule for the Thursday before lock down and he reassured me that they fall part of the essential workers and will be able to come Friday for the installation. On that Friday when I called him to confirm the time his phone was off till today. Yesterday I called multichoice explaining my problem and sadly they informed me that the guy claimed my voucher and according to their system it shows that he did not install /activate my account. I have been stranded for 2 weeks now and no one is assisting me in this matter. The installers number is ***