"I like the various products lipton makes"

"I participated in Lipton IceTea promotion register codes printed under the caps of bottles to win a Galxy phone or collect more codes and receive a guaranteed prize (flip-flops and towels).
I collected codes for 2 towels and I've been calling hotline for 4 weeks and aswer was the same - no prizes.
As I found out later they were giving away towels. Only one day and they ended right after they started! Lots of customers including me had come there and just left disappointed and feeling scammed!
I know that prizes were limited and there was a limitation in rules like 2 items for one phone number. But I saw myself people taking 10-20 items per one person. I don't think that anyone could drink ~400 bottles.
I described this entire situation to local office and they promised to check everything and tell me. I waited for a week for their answer, but didn't get even an apology.
So, I contacted the head office. After a MONTH of waiting I wrote them again and TWO weeks later they finally answered, asking to describe the situation (like I haven't).
After two weeks more (the slowest support ever!) We can't help you" -everything I got after 4 month and all the money spent. "