Empty promises

I purchased a big boy flip braai and accessories in November as a Christmas gift for my husband, just before Christmas the flip braai was delivered but no accessories, I enquired and was told the courier company had ****** not only my accessories but alot of other customers as well and that they would investigate and get back to me, we'll I'm following up all the time with empty promises they are still working on it. It's now 3 months with nothing. All I want is the accessories to ne delivered or part of my payment refunded.