Earlbird master care goes to the dogs

I have a contract with master care for over 30 years.Recently around the 15 December I reported my Defy stove oven bottom element and they sent an agent from klerksdorp master care who came and assess he then ordered spares and the next moment I get an sms stating the oven was done and they hope I am happy with the stove.I reported this to mastercare head office and the lady answering the phone tells me the job card was signed off.I told her the job was not done how can it be signed off as I did not sign any document to say the stove was repaired They re opened the job and it took a over week for them to arrive, to repair the stove and after the electrician left my wife wanted to use the stove only to realise the oven top element stays on max heat even while the oven is turned off. i called again and there now is all sorts of stories and excuses.when i ask to speak to a manager twice now in a week all the managers is out and they will call me back but they never call back.I was now forced to open another job card meanwhile the first job was not done but signed off.Poor work and even poorer management and customer relations.The person answering the phone does not know what to say so she try and prevent people to talk to management.I will not recommend anybody to take out a contract with early bird master care.in fact I am thinking of cancelling my contract too