Bad service funmart furniture

So late Dec me and my husband bought a soundbar at funmart furniture in portnolloth exactly 3months after that the soundbar started to sound funny almost sound like thunderstorms coming from it we took it back then they told us they will send it away and try to fix it so 2 months after that we go back and they tell us that the soundbar is in storage and that they test it in shop and that it play so right then and there we told them to put it on again and that we are very disappointed that they didn't send it away so they put it on and heart the funny noise that it was making so they said that they will send it this time now its 2months again and we are still without our soundbar i will never buy there again i was such a good customer too them and this is how we struggle....