Help can come from many sources, not only the BBC. For example, A new book/ebook available worldwide, "What Foreigners Need To Know About America From A To Z: How to understand crazy American culture, people, government, business, language and more,” helps foreigners benefit from a better understanding, including our language. Endorsed by ambassadors, educators, and editors, it even has chapters on English grammar and speech that identify the key problems common to foreigners (and Americans!) and how they can polish their communication skills. It has simple tips for speaking our vowel and consonant sounds, and even website addresses where you can hear actual English pronunciations.
Why is English such a monster to learn? Here's an excerpt from the book: "As you may know, English grammar rules are full of generalities and the generalities are full of exceptions. Even the exceptions have exceptions. This is why English is one of the most difficult languages to master."
The book (and e-book) is filled with tips anyone can use to polish their speech and understand the basics of English. Probably the number one problem foreigners have is slowing down when speaking English, followed by pronouncing consonants.
As the book points out, foreigners may think they know English but in many cases they have difficulty communicating to Western ears because of common problems most have. For example, if Spanish speakers learn to pronounce the TH sound in English instead of like the DA sound, it will significantly reduce their accent. However, most struggle in their efforts and need guidance. Perhaps concerned citizens and books like this can extend a helping hand. Good luck, you can do it if you persist and try different avenues to learning!