What about the pronunciation of Sapim? Is it 'Sa-peem' or Sap-im or... ?

Coincidentally was at friend's shop today, and asked for pricing on the CX-Rays (I could get them online for a 1/4 of the price, so he lost)... anyway, I said it one way, an a guy who is employed by him who varies between friendly to a**hole corrected my pronunciation. So what is it?