According to my Filipino Teacher Sister, you should use the word, "Nagtitinda" or "Nagbebenta" not Nagpapabili"
Anyway, I don't think so. Globe is not selling (not buying as well) BlackBerry accessories.
You may visit Mobile One store in Glorietta or in Alabang Town Center.
Glorietta contact number, +63 2 6255157 .
Alabang Town Center's number please call ATC Concierge +63 2 842 2782
Here's my number, +63 917 581 **** Call me maybe