"My brother getting his hearing aid repaired"

My brother wears an overhead hearing aid and only has 30% hearing.  He went to The Royal infirmary  Glasgow a few days ago, to see if he could get another one to replace this, but the manager of the audiology  department,  said no. It would have to be sent away, that they no longer deal with this there. So he hasn't  been able to hear for a week and isn't able to talk on the phone and I'd a carer for his mother, so needs his hearing.  And this is affecting,  his ability,  to do everyday tasks for himself. And nobody at the audiology  department  or his doctors  surgery,  have helped him with this situation.  He lives in the gorbals and has been deaf since birth and has had trouble now getting  repairs or replacement hearing aids and batteries.  When previously,  over the years, he was cared for with his needs.  Please , can you advised me of a number or person to get in contact with  my brother.