Explora Rebooting Loose Signal

I have had an Explora installed by an accredited installer in March. They connected my explora to my old cables. Since the installation I have been frustrated with either no service or distorted service and I have to reboot the Explora every day - losing signal and all my scheduled recordings. On some days the Explora just reboots and only some channels work from time to time. I have spent much time on the phone trying to resolve the problem with no luck. After calling the call center again, I was told to take the new Explora in for them to check it out. All this was done at my expense. I did this three times and Explora was exchanged twice and more settings were changed, but the problem still persists. I was then told get an installer to test the installation - I paid the installer and all was fine for 12 hours. In the meantime I am paying subscription for services I am not able to use. I would like DSTV to send someone out to solve the problem or return my old PVR and take this Explora.