Unbelievably bad experience

Firstly my first GVI experience was fun and I got a lot out of it, however my second experience was unbelievably bad and I will never use or recommend this organisation to anyone.
I booked a 2 month marine conservation programme last year and things were fine until our webinar where I realised I didn't receive an email from GVI with the necessary visa documents. I had to request they send me this email, which had been sent to everyone else months ago. When I got the documents I realised why it was sent out so early, the visa application was for a business visa and was very involved, it included a police check and a thorough medical, my CV, work history, etc. It was a week before Christmas when I received this email and I was flying out to my programme the first week of January.
I was told it was fine by the GVI support officer and I can get it all done in a week, this was not possible at all. There was absolutely no way to get this done beforehand and I received very little support from my support officer (probably because it was a week before Christmas). I called the embassy to see if I could get some help there and they assured me I would only need a tourist visa (I did outline exactly what I would be doing there). Two days before I flew out I was told by the support officer that I couldn't do the programme if I didn't have the business visa and the embassy was wrong. I decided this was more trouble than it was worth so I wanted out and asked for a refund. Was told I wasn't eligible for a refund as I didn't buy the $500 cancellation waiver at booking so I couldn't get my $10,000 for the programme back.
I wasn't going to just let $10,000 go so I flew out to the programme and tried to make the best of it and get my business visa (for a volunteer programme) in country. While there I received no help in getting my visa. I had to make my own way to Suva from the village (3 hour bus ride) and organise/pay for transport, medical, application, and accommodation.
I left after 1 month when I had completed my PADI Advanced Open Water course. I left for personal reasons as well as being unsatisfied with the programme/organisation. Now that I had left I thought I could put the whole mess behind me and enjoy my new diving qualifications. I waited a month for my diving card to arrive and contacted the Fiji project manager to ask if it had been sent there. Took about a week and multiple attempts to get a response and only after giving up and contacting PADI myself did I learn that I was not in their system. I then received an email from the programme and learned that the instructor had not submitted my data to PADI and he has since lost all record of my training. So $10,000 (plus the scuba gear I had to buy and the visa) and I still do not have my diving qualifications nor did I do any actual volunteering on the programme.
This organisation is not interested in your experiences or helping communities/environment etc, they only want your money and good luck to you if you give it, then you're on your own.
As stated at the beginning the first programme I did was fun and I enjoyed it, however the second time is beyond a disgrace. Do not trust GVI. Even when the programme was good it was not that good and it is certainly not worth the gamble. This has been the worst experience I've had with any business. If you want a good volunteer experience please check out Laos Conservation Trust for Wildlife (LCTW)