I swiched to lebara-mobile about year ago because ot their cheap internetional call rates. They have very good covarage as well. The customer service is very useful. The company is rapidly developing recently and they also have got impressive monthly pay offers. Moreover other big advantage of the company is that they have got limited offer for free internet up to 10mb per day which they extended for about 10 months until now. One of the disadvantages using this company is that the website needs improving because it does not provide all the information needed (minutes and masages left lebara to lebara, how much mb you have got left for the day) I also have problems logging in sometimes.
To reply as a company, please log in to your business account.