Thanks for all your help Mocacinno 

If they were scammers (which it looks like they were)  I can still see my btc on the blockchain (or is that immaterial?)
https://blockchain.info/address/12yWKq8g9C8RaZSLFsAcBDdePHPjujWszX

We're cannabis activists, not IT pro's so all this is very frustrating, but i take full responsibility for not being able to find a private key, but the thing is, I don't remember ever using/needing the key or receiving one from BTCquick. It was a wallet for donations only, at the time. We bailed out quick when the Feds closed down Silk Road......

I have the wallet ID (12yWKq8g9C8RaZSLFsAcBDdePHPjujWszX) and a welcome email from BTcquick but no private key.

in August 2013 I I registered a BC wallet to receive donations for cannabis legalisation efforts in South Africa. Some supporters were selling weed on silk road before it went down the first time in October 2013, and were donating a % of sales to us. 
In those days, authentication at BTCquick was a simple jpeg of my ID and credit card. I received a confirmation welcome email from BTCquick and nothing else. i didn't think anything of it because I wasn't in the market to buy BTC at the time, only receive them.
In the first 2 weeks of September 2013 i received 4 transactions totaling 7.4 BTC and they remain there to this day.
It doesn't look good. I've brought myself up to speed with my predicament and realise if i don't have my private key (this was before 12 word pass phrases) then I'm stuffed.
Is there any way I can transfer from one wallet to another? I now have 3 wallets at my disposal.
The biggest hassle is, BTCquick doesn't exist any longer and when I click on 'forget password' in blockchain.info and enter the email I used to set up the wallet in 2013, nothing gets sent to me.
It's as if everyone has gone away.....
Is there anything I can do? I'm still embroiled in fighting the weed laws in SA and 7BTC in SA Rand is impressive.....