Unresolved Wine Cooler Repair Samsung

I am very disgusted with the lack of response & client service delivery from Samsung. We logged a call approximately 2 months ago to have our wine cooler repaired. They sent a representative to establish what was wrong, we paid the hefty call out fee. We were told that a part had to be ordered & we were called to approve the quote. The guy came out with the part but could not fix it & we have never heard from Samsung or him again. Must husband called Samsung 2 weeks ago & they advised that they were not aware that the call had not been resolved? They then said they would escalate the matter. To date we have had no response? My husband, then tweeted about this hoping to get a immediate response. He received a reply that someone would get back him. Well guess what, still no response from Samsung SA. I then posted my complaint on their FB site 3 February & was informed to send a formal complaint to a specific email add. Which we did, we were informed someone would come out last week to attend to our query. Well guess what no one pitched up.?Clearly they do not value your clients & there is a distinct lack client care??.