NO FEEDBACK or FOLLOW UPS

I logged a complaint almost 3 weeks ago regarding a signal problem. A consultant came out a week later, tested the signal and advised that there is a problem with the signal and that the contractor for the booster will be in contact with me. I received a call from the contractor on the 4th who was to come to me the next morning. I am still waiting. I received no call from anyone to follow up on this query. I called the contractor myself today only to get to his voicemail advising that he is not in the country. I am so tired of the pathetic service that I am receiving. Do you guys not care about the satisfaction of your clients? I am a business women and your lack of service is affecting my business. This is unacceptable. I need my issue resolved. Surely there is someone employed at vodacom who is capable of dealing with a query in a professional manner . On another note, I called the call centre today only to go through to an automated voicemail advising me that the number that I have dialled is unavailable. This is appalling.