Gator GKBE-61

I ordered bags for the concert tour, but apparently will not use it, because it is written : "Internal dimensions (W x D x H): 1092 x 445 x 127 mm." My instrument dimensions are: (W x D x H) 1050 x 352 x 115 mm, and I can not fit to this Gator GKBE-61 bag my instrument, what I can do about it ... what else to do if I will order another company made bag , can be a problem. I took another instrument KAWAI K5000W with dimensions ( W x D x H) 1050 x 320 x 100 mm , - problem the same . Who responds to the fact, that the case does not fit as described. Other bag Gator GKBE-88 Interior dimensions (W x D x H): 1499 x 483 x 127 mm, My other instrument dimension is : (W x D x H) 1425 x 442 x 126 mm. It was hard enough to put this dimension instrument to "biger"dimension Gator GKBE-88 bag .
As I understand, that Thomann will say, - "Oh very sorry ! Send it back, if you do not like this case, we will apply you something else" .... It would be good, Only, where to put Your "Sorry" , to my pocket , or bank account? . And for me now, before the concert tour, it's only time to run to the post office and send back this bag ... What's in the "economy", of these people , who are made these bags... if it's 1090 mm written, and maybe it will be 1040 mm or even something else ...