Poor Service, Non Avalaibilty of relevant persons

It has taken four week for a repair on my stove by Whirlpool SA, that is still under guarantee. We have had to make all the follow up calls. We requested that the matter be elevated to more senior personnel to resolve the issue, to date not one senior person has bothered to contact us, namely Melissa Humner.I feel that it would have been quicker for Whirlpool to replace the faulty hob rather than wait four weeks for a part to be replaced.The unit in question cost me R 7000.00 and I feel that at that price the quality and service is totally unacceptable.Having friends and family visiting over the past few long weekends has been an embarrassment due to this delay.We would like a full explanation regarding this poor service someone who is more competent than the call centre operators and call centre supervisors.This has been a terrible experience and I will never purchase a Whirlpool product again if this is the level of Service that a loyal customer receives, unfortunately I already have numerous Whirlpool products, but will now consider other brands such as AEG who have given us a fantastic service(within 24 hrs) in the past. I will definitely not recommend Whirlpool to anyone.