I called the number and it belongs to Tank Shop
This is their full details:
Address:Suite 177 Ground Floor
262 Adelaide Street, Brisbane QLD 4000
Phone: 1300 920 547
Website: www.tankshop.com.au

Caller: Tank Shop

Yes, this is our phone number.

NOTE: Address is old.

These are our updated addresses:

QLD Address
84 Brunswick Street,
Fortitude Valley QLD 4006

NSW Address
Level 3, 55 Pyrmont Bridge Rd
Pyrmont NSW 2009

Best contact is by phone or email.