4 MONTHS STILL WAITING!!!

I installed a alarm system at my home about 4 months ago. The technician emailed me requesting to deposit to money in order for them to install the alarm, which I did. He promised to sent me the tax invoice in due course but to date nothing. But that is not the problem, the problem is that the alarm is installed as promised but in my lapa the sensors was not installed (which i had to pay extra for). They said that they brought to little sensors and will return the next day. 4 Months later and still no sensors!!! I try to phone email sms but no luck. Ever since I had 1 brake in and 1 attempted brake in, who will replace all my lost stuff? Why should I pay for non service???<br> <br> Please help me!!<br> <br>