i bought 2 tv shows of itunes classic episodes of doctor who and somhow i still do not have the shows after several months but i still got charged. If itunes had scammed me more than £4.00

I purchased and tried to download Debbie Davies' Blues Blast’ from iTunes. Only 6 of the 9 tracks downloaded successfully. Of course my credit card was charged the full amount. I cannot find anyplace to voice a complaint to iTunes.

I am now extremely upset with itunes. They have scammed me numerous times and ripped me off now for over $100. First I purchased a movie which deducted money from my itunes account, however, it did not appear in my movie library or on my purchased list. Secondly, after purchasing more certificates to redeem, they have not been activated at the register of purchase and emails to itunes have been non-respondant. Most recently, after exiting itunes I checked my account balance which contained over $15. Subsequently, I logged back into itunes and the money disappeared from my account. This drew the line for me and I will not be purchasing from itunes any more, nor will I recommend this dissapointing scam music application to a friend.

i downloaded itunes which said at first it was free then it said 14.97 download this seemed not to unreasonable and then it charged me over 50 pounds 4 something additional called usd

Hi...
iTunes advertised to all P!nk fans that if you pre ordered her new album on iTunes you would receive a code, which would enable you to buy concert tickets prior to them being released to the public. I pre ordered and downloaded P!nks album and received confirmation email to download it. I should have received my email yesterday with the pre release access code for the tickets going on sale today at 11am. I have not received any emails or an explanation for not getting a code from them and feel it was false advertisement as I wouldn't have ordered the album off iTunes as would prefer to buy it, I only ordered it off iTunes for the opportunity to get concert tickets earlier and better seats.
The biggest problem for me is that I cant seem to complain to iTunes direct as contacting them is not that easy? I rang the number off ticketmaster that was advertised if you didnt get your code and the rep on the phone couldnt help as they are linked to apple and not iTunes, so were no help at all. I asked for details either phone number or contact address to contact iTunes direct and was told that there were no such contact details and couldnt help. I have emailed the question links on iTunes only to receive an automated response. So angry and frustrated as wasted money downloading off iTunes, wasted time taking time off work today as can not access internet at work and now I am left frustrated as seem unable to make a complaint against itunes.
Can you help with this matter... or advise where I can make a formal complaint?