No follow up after repairs not carried out

I called Whirlpool around the 26/08/15 with a problem. They sent someone out. He said he fixed it and charged a call out fee. This did not sort out the problem and it still made the same noise. I phoned him again and he came out on the 7/09/15 and spent about 5 min there. I then phoned him again straight after as the problem still did not go away. No answer. I then phoned Whirlpool at 08:33 to let them know that their guy did not fix it. They then called the repairman themselves and told me that he would call on me again. I then phoned the next day as the technician did not contact me as promised. I requested a different technician if there was no further cost attached as I felt he did not even bother putting on the oven to listen to the actual noise....How can you correctly diagnose a problem if do not listen to the actual noise?. On the 9th Whirlpool called me to advise they had escalated.. Still no contact by the 16th. I then called again. They then confirmed that the same technician would be in contact with me. Well today is the 19/09/15 and I still have had no contact. I am now tired of this kind of service from Whirlppol