Still awaiting refund after 7 1/2 months.

I booked a tour to Israel through Oak Ministries during July 2014 which I cancelled on the 1st of October 2014 after which I was promised that my money would be refunded. Subsequently with problems in Israel more people were given the option to cancel or join a new tour planned for2015. As I did not wish to go on the tour in 2015 I again informed them so. I have received numerous emails that the matter is being attended to but still no sign of my money. At the end of December 2014 an email was sent out that a declaration is required for tax and refund purposes.Still no refund. On the 3rd of February an email was sent informing that the money was released from the UK to SA and immediately another email followed apologies...they are awaiting clearance. On the 13th Feb an email that refunds have started, on the 23rd of Feb an email that everyone will have their money by the 6th of March,on the 4th of March the financial manager was busy with year end and will commence refunds once financial year end was over.Yesterday after trying to speak to Hannes I received a sms apologising for not being able to take the call. This has now been going on for seven and a half months! Please help!