| Business | Phone |
| Cardservice International 790 Hampshire Rd # B, Westlake Village 91361 | (805) 494-9255 |
| Nationwide Merchant Svc 2660 Townsgate Rd # 740b, Westlake Village 91361 | (805) 777-1766 |
| Worldwide Merchant Svc 2660 Townsgate Rd # 740b, Westlake Village 91361 | (805) 777-7295 |
| Bankcard Usa 5701 Lindero Canyon Rd # 3-2, Westlake Village 91362 | (818) 597-7000 |
| Cardservice 5701 Lindero Canyon Rd # 3-2, Westlake Village 91362 | (818) 991-3400 |
| Cardservice Worldwide Inc 77 Duesenberg Dr, Westlake Village 91362 | (805) 777-7616 |
| S & S Bank Card Systems 31368 Via Colinas # 112, Westlake Village 91362 | (818) 735-6280 |
| Sds Processing 2985 E Hillcrest Dr # 205, Westlake Village 91362 | (805) 230-2727 |