Pathetic service from Fedelity ADT

I have had ADT security at my home for many years now, have not had to use their services much. A few weeks ago I started receiving sms’ that there’s something wrong with our signal and that I should call the technical department, which I did. The call center agent requested me to test the alarm and they confirmed that they’re not receiving signal from the house and that a technician needs to come onsite. I phoned last week Tuesday and requested an appointment for the technician to come. I was given the date of Wednesday, 02 April. I was told they can’t give me a time and the technician would call an hour before they came. I made provision to be at home in the day. No technician came. At about 13:30 I phoned ADT and reported that nobody has been to the house they told me to wait. Nobody came. On Thursday, 03 April at 08:00 I phoned ADT and told them this story. The person I spoke to at the technical department said she’s escalating the matter and someone would call me or she would call me. No call was received. At 16:30 I again phoned ADT, the same call center agent who had answered my call in the morning answers it again. She says she has not received feedback from her supervisor. I asked her to follow up she told me she had done so in the morning so she can’t send the same email again. Today is Friday, 03 April , nobody from ADT has phoned me and nobody has come to the house! I am disgusted by this level of service from ADT. Every month these people deduct no less than R400 from my bank. Now they fail to provide me with basic services. If there’s no signal coming from my house it means an intruder can enter the premises and nothing would happen. This is pathetic!!!