Poor after sales service

Bought a component fron them, after about a week it stopped working so i contacted them and they said that they will collect the part to investigate.<br> <br> A driver arrived unanounced at my house a few days later, by chance my mother was at my house but was unaware of the parcel so tried to call me. While she was trying to call me the driver started hooting his horn, waving his arms and gesticulating that she must hurry up. He then became rude towards my mother and left when she explained that she cant get hold of me.<br> <br> I sent an e-mail to inform rs components of their drivers rotten attitude and explaining that they must at least call before someone just pitches up but 4 days later i have not had a response, they still have not collected the defectice component or made contact.