We bought a brand new Cartier watch on early July 2019 from their Harrods shop, however, after we come back to Hong Kong and found that the watch doesnt work properly as it run less than it promised hours and stop working. We tried to email our problem with Cartier, and asking to exchange a new one, however, they rejected such standard requirment. Given Cartier's brand, the expensive product with a brand new one the watch and cost more than $18000 pond, we believe that we should get a better after-sales service. However, we didn't get so far, this is not consistent with such brand. We would like to seek for the help on this issue. Many thanks!