Layanan konsumen
0804-1-889-889
SMS
0815-112 99999
Email
customercare_bit@yahoo.com
Bass Lumajang Electronic Service ( Bp. Luqman )
Jl. Kyai Ilyas 140 Lumajang
Telp. ( 0334 ) 885378 / 0815.5577 1413 / 0812 5998 0302