Telephone Interviews in German

Hi, I need a native German speaker to conduct 100 telephone interviews in Germany aimed at the garden furniture sector. The successful candidate will be paid 7,50 per completed interview + 50 Euros for every batch of 50 interviews. No database is available, but all the contacts are in the yellow pages. The calls must be completed by March 25th at the very latest. Additional work is very possibile if the project is completed quickly and professionally.