I thought I would share with you my experiences at the hands of a breakers yard called International Car Spares when trying to source a replacement a/c compressor for my mk1. Maybe this was a one off, maybe it was just a bad week for them, maybe not, who knows. I will leave you to make your own mind up.....I will be thinking twice before using them again.
Saturday 18th April
Placed a query with Breakeryard.com for the exact make and model compressor I needed.
Sunday 19th April
Had a email response from ICS (and a couple of others) saying they had the part I needed.
Monday 20th April
Called ICS and they confirmed they had the right part - right manufacturer and model number were confirmed so order placed. I was advised it would be removed from the car on Tuesday and delivered on Wednesday 22nd.
Wednesday 22nd April
Waited in all day but no delivery
Thursday 23rd April
Called ICS to enquire about non-delivery: Despatch dept didn't answer so tried Parts dept..only to be told the Parts dept didnt start until 9:30. Called again after 9:30 and was told by Parts that I needed to speak to Despatch and they didn't start till 10!
Finally got through to someone after 10 and was told it had been taken off the lorry as they were also deliverying some engines which might have damaged the compressor 
I asked if it would be delivered Thursday I was told no, it would be delivered Friday now....no clear explanation of the days delay was offered.
Friday 24th April
Waited in all day but no delivery
Late afternoon I called ICS to ask what was happening with my delivery: Despatch didnt answer. called Parts and a man said he would just put me on hold while he investigated....15minutes later I gave up waiting and put the phone down. Deep breath and I called Parts again, spoke to a different man who seemed to know about my order and told me the courier company had me down for delivery Friday, but had "lost" the part. No explanation was offered on how they could "lose" a part, but was told another mk1 of the same year as mine had come in and they were sure it had the same compressor as the one I needed and the "engineer" was checking.
I was told someone from ICS would call me on Saturday to confirm if the part was the right one.
Saturday 25th April
Yes, you've guessed it...no phone call
Monday 27th April
Waited till after 10am and called ICS to find out if they had the part. Called Parts and gave my details. Man said he would call me back in ten minutes. one and a half hours later I was still waiting for the call.
Called ICS and cancelled my order. 
I am now waiting for a full refund to appear in my account....any guesses when it might appear?
Monday 4th May
Still waiting for my refund
Wednesday 6th May
Refund received 