For the second time I had to come back to the store and waste my time due to an error made by the salesperson. This time they have written wrong serial number in the invoice, delaying my cashback claim. I will need to get a second corrected invoice to be able to complete my cashback claim. The first time I bought a tripod, and when I came home I realised it was the wrong one (same brand but different models). I didn't notice before because they had the same price. Also had to go back to the store. I'm very busy with work and having to make two trips to the store for each buy is pretty annoying.