Turkish Airlines fails to reimburse for damaged baggage

My baggage got damaged back in February on a Turkish Airlines flight. Turkish Airlines was initially very helpful and friendly and cooperative in agreeing to assist me with the repair costs, but for a while now I have been struggling to get the final reimbur*****t. I have probably over the course of this matter followed up 10 times or more with them. The last comment was on 22 April that they have submitted it and that it would take 7-14 days. It is not more than a month and still nothing. I am very disappointed in how my case was handled in the latter stages.