Complaint never resolved

I complained a while ago to Multichoice with regards to SABC3 channel goes off every Monday evening at 21h00 whilst my family & I have some family time watching either Survivor or Amazing Race. My first response from Multichoice that I must contact a DSTV agent. Multichoice therefore passing the buck. I further explained that it is not just my area but other areas too as my mom's DSTV decoder goes off the exact same time. So after complaining this issue was resolved for a couple of weeks but has now started again. I do not want to hear that it could be signal issue as I was previously told. A signal issue will happen anytime of any day of the week. So please can some one with some common sense explain to me why ONLY on Monday evenings at 21H00 sharp my decoder switches off and reboots? Are you doing this on purpose so I have to buy your explora decoder???? I do not want one!!!!!