Hi, I got my Alloy RIM repaired at Salwa road, at the End of salwa road before getting on the BU samra highway... on the right side there is an area called AL - MURRA, on the right side you will see all shops with tyres and car RIMs.
There is a shop called Al-Kaabi (I think), he repairs broken and bent alloy rims like an expert... MashAllah
hes a bangladeshi person but expert with his work and reasonable price also... the nearest landmark is UBL bank branch at the end of salwa road, which means before UBL (approx 200 meters) ul find it on your right side exactly next to a grocery store. Otherwise everybody will tell you go to different streets in Industrial area.

Good luck!