Waiting for more than two months to install adsl line, no answer from call center or head office

At the end of November I called to arrange form my adsl line to be moved. The call center agent did not log it at all. Then in mid of December I did it again it was logged with oder number ********** 52A and ********** 52 technicians called 3 times to make an appointment but did not came. I tried numerous times to find out what was going on with no success. The call agents just drop the phone or tell me they will escalate the matter to hq and I will receive the ref. Nuber by sms but that was also a disappointment. The walk in center can't help me apperntly