Help & Advice Please.....Worried Sub Owner

[Sparky1970]

Hi all
Just received my submariner back from the jeweller, got it home and have noticed a dint on the case plus some scratches that were not present before. I will have to take the watch back early next week as I am away for a few days, but am just wondering how I can prove they were not there before. The watch was in for a grinding issue with the crown so obviously the back of the watch has been removed to gain access. I am thinking the watch has been subjected to too much pressure whilst having the back removed? You may be able to help me with the procedure taken to carry out this. Other than that the watch may have been dropped. Have tried taking a pic of the damage but it is not good enough to post (will try later). If you can imagine turning the watch upside down and looking dead centre to the opposite side of the crown the curve of the case is almost flat. I am beside myself at the moment and would really appreciate your advice on this. Thanks Guys