Can't get service

On 22 March we emailed wanting to go ahead with the quotes that we had been given to take up ADT as a security company. We signed the papers on 24 March. We were told it would take a week to get the technicians out. On 5 April I followed up as we hadn't been contacted and was told that there was a miscommunication around payment but that he would sort it out. I followed up again on 11 April and was told he would look into it and come back to me. My husband phoned throughout last week and eventually was told that on Thursday the technician would come through and install. Thursday they came through bur did nothing! My husband continued to phone and was told that it would be investigated and that he would come back to him. Nothing to date. Never has it been so hard to initiate a contract if this is a service you provide on start what can I expect when it comes to securing my family's safety??? <br> Poor service!!!!!