Surname change

I recently had a surname change and I have been struggling to get Trueorths to update my details accordingly….firstly I do not have a card, so I use my ID when making purchases, now with the change of surname it’s going to be a problem, I sent in an email a while back amd I received a reply saying I need to go to a branch, I then visited the Springs Mall branch and they made copies of my ID indicating the new surname as well as the surname change letter from home affairs but yet my surname still reflects the old one…as mentioned before, I do not have a Truworths card I use my ID to make purchases, It’s going to be a problem going forward if Truworth still has my old surname and my ID is showing another, please correct this to avoid us having problems in the future