i think as far as the badges are concerned - becuase its had this WALD thing done, it probably came with a wald badge on the left, which is also what could have confused the DVLA, so the Dealer probably took the badge off and put GTI back on instead.
dont think its a big concern as all the other info on the V5 completley points to a GTI, including engine code
I have considered taking the car back and getting my money back but dont think its worth it.
I only paid 13k for mine with a very good spec (apart from WALD) and low mileage - car has only done 15k.
looking on auto trader - would pay nearly 15k for the same spec to get it from VW, and would definitley want a 1 year warranty with the car after the trouble ive had with this one
i do have the option though and the dealer said they would give me a refund but think it gets a bit complicated since i part exchanged my clio towards the GTI