I have started working from home and need to upload large video and image files, but my broadband is not the best, and my upload speed is very slow.

this is actually really good for my house!
I have spoken to my ISP Vodafone, and asked about a master filter, but they said is wouldn't make a difference, and they also said that unless i get fibre (which I can't for a for few years) then I cannot get a faster upload speed. they also said that having a business account wouldn't make a difference.
I'm not sure I especially believe them, seems some people on here get some very fast speeds, and I'm a little confused about all of the different options and companies.
- Which ISP seems to get the fastest speeds/is the best?
- would a master filet make a difference?
- What can I do to get a faster upload, is VDSL or something else viable?
I live in Devoport, Auckland, 0624.
My ISP is Vodafone
I believe I am connected with ADSL
I don't wish to move anytime soon.
Price, I'm willing to pay a bit more for a good speed, but nothing excessive.
I am willing to concede that our wiring might be crap, but I'm renting so probably not much I can do.
I appreciate any help anyone can give.