has docomo the rights to act like this legally or its better to find a lawyer to sue docomo for not explainning corectly the terms, as nothing is explained in the contract?Docomo can, and apparently does, limit which phones qualify for its pakehodai plans. This is not an uncommon practice, for example, Softbank requires unlimited packet plans for their iphone that are different from their other handsets. Basically, if you didn't take the time to fully understand the contract, specifically the Japanese language one, then that is your problem.
for now im planning to record the docomos call and show to a lawyer because they just deny explanations in foreign languages and uses lots of racist terms, like ''here is japan, u have to speak japanese here, not other languages'' and ''if u dont understand, find someone to translate for you because this is your problem''.
Despite the fact that it is likely illegal to record the phone conversation without Docomo's consent, I don't see anything even remotely racists in these comments. Remember, Japanese is the official language of Japan, and anything provided in English or otherwise is a service. If you don't understand Japanese then is is your responsibility to supply a translator, not Docomo or any other business's.