Vigin Active lost me R700

Virgin Active was advertising a special whereby Vitality members could join the gym and if they went to the gym 24 times pre January, they would receive R700 cash back. I signed up with my sales rep on the 27th of November, on the basis of this special deal. However virgin active's speed point was not working and therefore I could not physically pay the initial sign up fee. After returning from a business trip on the 1 December 2015, I met again with my sales rep in order to pay the amount - after I had paid the amount he ONLY THEN told me that the special deal only app**** to contracts entered into in November and because my contract had only been paid in December, I would not be entitled to the special. Let me stress that at NO point when I signed the contract did the sales rep indicate the deal was only applicable in November - even after his speed point machine didn't work when I initially tried to pay the fee in November and only couldn't because VA's faulty speed point . After following up my query with the club manager, I was told that I could not receive the special because it was my fault that I had not paid by November which it clearly isn't.