Bad Service

I had a Maxidor gate installed on 11 July. At the time, the lock that was fitted was faulty and I was told by the technician that it needs to be replaced. I tried in vain to get hold of someone after that day, eventually I got a call and the lock was scheduled to be replaced on 12 September (2 months later!!). The technician arrives and the has the incorrect lock so nothing can be done. The appointment was rescheduled for 16 September at 17:00. I was told I would receive a call 30 minutes prior. No-one pitched up. Only after I emailed the Company the next day I was told there were issues. The technician came out again on 18 September but I was told the lock is not fixed properly and unfortunately Maxidor is having issues with the lock so \good luck and if (I) have a problem again