Consumer protection agencies in Germany

I recently bought an apple macbook and a printer which came with a 90 euro rebate I filled out the form with the serial numbers, cut up some nice boxes to have the UPC codes and mailed everything in. Now I received an e-mail from apple that I have not sent in the UPC codes. I am upset with the way they handle their customers since they will not accept a copy of the codes, but only the original codes.

I bought this through the german apple online store and the rebate center is in the UK. My question is how can I get legal remedies. In the US, I can lodge a complaint with the Better Business Bureau which tracks all customer complaints and the responses from a business. I can also contact the attorney general for the state in which the problem occurred and fill out a form which requires a response from the company. Are there similar "consumer protection" agencies in Germany or the UK?

Any links or advice will be most welcome.

Sure there are Uk government agencies but you will need to deal with it in Germany as that is where the contract was established.
The location of their service centre or hub isn't relevent.

Verbraucherzentrale. But you will have to pay €30 or so charge.

But has the retailer broken a contract or are you just pissed off with perceived bad service?

I would say that the retailer has broken a contract. I purchased the printer on the condition that it would be 90 euro cheaper due to the rebate. I sent in the original UPC codes and now they claim they did not receive them. Personally I believe it is a scam, I jumped through all of their hoops and then I receive a generic email claiming that the original non replaceable items were not received.

When you sent the original codes that were worth €90 through the post you got the letter registered right...

Apple are not going to actively scam you.
Though it seems their customer service might be better.
I have similar stuff in my line of work but 9 times out of 10 the customers try and pull a fast one on us...

No I did not send it registered. Rebates are almost scams in themselves. They know the compliance to fulfill the requirements results in a small percentage of people who respond. The letter arrived, so there is no value in debating whether the letter was registered or not. They are responding to the letter they received from me. It also does occur for a company to scam and not fulfill rebates otherwise they would just have a simple price deduction. They have my serial numbers huge chunks of the package which was cut out and the itemized receipt of purchase. I expect better from apple, but it just shows the inherent problem with any company. Money first, product second, customer third

Due to the poor customer service and almost lack of consumer protection in Germany, I would love to find such an organisation or agency to file my complaints. Generally if you are experiencing difficulties or product defect, one has to call a tolled number and wait only to get an unfriendly, unsympathetic, rude ear. RIDICULOUS!