I have been in Kenya on a tourist visa for less than 90 days , I arrived at the border of Tanzania yesterday with the intention of going to Zanzibar and was advised by an irate immigration officer that if he stamped my passport I could not return to Kenya ? I have never renewed my visa before . I was forced to return to Kenya as my return flight ticket and other luggage was there. Any advice please. It was my understanding I could renew my visa once without any problem . Am going to immigration office today to enquire and I still have a week left on my passport.