.I ordered an air bomb to clean my hearing aids, o...

.I ordered an air bomb to clean my hearing aids, on the description it was marked 210m / m and when unpacked it is only 150m / m, I told them but for them it's normal, it is false advertising because it is marked on the bomb but it is turned in the opposite direction so as not to be seen, seller has to advise against, not correct because he does not respond at any time