There is an excellent repair service on Calle Beller which is on the left side about 100 yards before you reach the Metro Station. Sorry I do not recall the name, however it has a large retail space which is seen from the road.
Yea this is one that is closing. Yesterday they only had 2 people working in the back. All of the jewelry cases against the wall are empty and not a lot in the remaining cases. The guy behind the counter couldn't be bothered to help me. I asked if they were closing for good and he just walked away. The older man was not there.