The customer service is excellent - they reply immediately and try to keep you happy. Be aware though that although the course is very economical and should remain so, the issuing of the certificate at the end has an extra cost and the electronic certificate will not print to standard UK A4 paper so you really require a hard copy to be sent which as an extra cost, so there are many little added hidden costs which can all add up in the end. The course will not teach you how to teach English to students but there is a lot of language theory and various teaching methods all passed over quite briefly which is all for the best as you just need the certificate to teach.