Won't pay

I took in my TV on Monday due to the fact it just switched off, I was informed that the technician found pests inside the power box and parts are no longer available to fix it since the model is no longer available (it's no longer available perhaps because the TV is almost 5 years old, which would explain it not working I guess), but no I'm told it is because of the pests, but here is a thing, the house was fumigated earlier this year for ants, and those are the only pests I had, but even then, they were never anywhere near the TV. But fine, let's say the ants are the reason the TV stopped working after 5 years, they are saying the insurance won't cover the replacement of the TV, I want absa I direct to show me in my policy where it says they do not cover me for damages if insects are found inside the TV.