Bought faulty television from HiFi Corp.

I bought a television through HiFi Corp online in November 2015 so it is still under warranty and was delivered to me via the Vaal Mall branch in Vanderbijl Park (later than the anticipated 2-3 day delivery period that I paid R150 for) now, not even 5 months later the television does not come on at all so I placed a call for repair/replacement of this faulty television but after 3 weeks I am still waiting for someone to come and fetch this television. Everytime I phone or email the branch manager at Vaal Mall branch I am being told that they will send someone out to come and fetch the television. So my question is, does Hi Fi Corp wait until your warranty expires and then contact you back to inform you that sorry they cannot help or are they just delivering the poor after sale service that most people can vow for? Sad but true.... Not a happy customer at all. Poor poor service!