Letter to the USA

1. Sending letter to USA
2. Letter comes back with a stamp "insufficient address"
3. Ask your trade partner, what could be the problem is
4. Answer: "I think what went wrong is the way you have addressed your letter. You need to mention the street first and then the town, followed by the ZIP code. This way it should arrive. If not you need to come over, visit us and bring it with you. :-)"
5. Ouch, clumsiness!
6. Sending letter again with the numbers' range changed. Two weeks and a couple of thousand forints lost.


+. BUT: 

Good idea to travel there and bring the letter with me. Maybe there is an even better way;... what if... I enclose myself to the letter in the envelope, and if they don't understand the addressing at the post's logistic centre, only tell them from the inside, where to relay it. :-) How cheap would it be to get into the US, haha... American Post Service, take care of speaking envelopes. ;-)