Series *****er

We have been having a problem with our dstv explorer decoder. We have the full package and we pay quite for it. Recently we have been having an issue with the different series we watching. Where epiare jot loading for weeks on end and before you know it the episode is no longer available to watch on dstv catch up unless you watch it on dstv now. I took the decoder to the dstv accredited store. The lady did a hard drive update or whatever it was and said all is fine. But the issue hasn't been was resolved . I'm missing out on some of my favourite series