Slow download even the combo version

Question

Hi I have been having problems with my download with 10.10.3 I checked my internet connection it's fine the speed but the download speed whenever I install it is always like this. I need some help

Answer 1

10.10.3 combo is 2 GB = 2048 MB = 16384 Mbit.  
At 25 Mbps = 655 seconds = 11 minutes.
At 5 Mbps ~=3000 seconds = 50 minutes
At your speed of 33 Kbps, which is about that of a dialup modem that is about what they were in 1994, it will take a pretty long time.  By 1997 they were making 56 Kbps modems.   ISDN is about 128 Kbps.    Low end DSL lines that had no noise on telephone lines could accomplish 384 Kbps.   5 Mbps is the normal speed of most cable internet connections, and that's about 5120 Kbps.   If you are less than 2 miles (3.2 km) from the telephone company DSL central office, getting 2 Mbps DSL should be practical.     25 Mbps is the minimal speed of fiberoptic internet sold by both Verizon as FiOS, and Comcast XFinity.  
If you have a high speed internet line, either your connection isn't good, or you are sharing your connection with that number of devices that your speed is relegated to plain old dialup speeds.   Modems that use USB speeds can really be slowed down if the drivers aren't right.  You are far better with 802.11g, 802.11n, 802.11ac wireless or ethernet based connections.
If you have any connections with Limewire, Transmission, or peer2peer networking those can slow down your connection as well, in addition to expose to you to trojan horses not normally seen on Macs, which could also result in slowing down your internet.   Unless you use such tools, there is no need for software based firewall or anti-virus software.  And backing up should be done prior to any download, including any backup to a Time Capsule which could slow down your download.