Dstv/Dstv price lock complain

Good Day I recently bought 2 explora decoder (1 which was to be for extraview). I notice that I was not given my free installation card, what happens now? How do i get my explora installed and functioning hence the 1st installment has already gone through?.

Please contact me on **********

That's the email I sent them.. I got call a few days later and was promised that they'd log a call on my behalf to the Dstv Price lock.....

And till this day they haven't called me and it's almost month end they gonna bill me again, whereby I haven't even used it..... I'm utterly disappointed by the service received