Wrong adverti*****ts from Virgin Active

My daughter has joined Loftus Virgin Active after so much persuasion from a sales person named Francis.He specifically said that if she joins that specific day which was the 31of May,the money will appear the 01 of June and she will benefit the promotion they have(June and July will be free).Money has been deducted from her account on the 1st of July.When she came back to the gymn and asked the reason why,the sales person changed the whole statement and said that only June is free.When we checked the app it was written that June and July is free.The sales person changed his statement again when confronted about it and said because she enrolled the 31st of May.Her contract is stating that the day of commencement is 1st June.Virgin Active is refusing to refund the July fees and the staff members keep on saying that they will phone us but they never did.My daughter is stranded because she didn't budget that money that they took.It was meant for her basic needs at varsity. It is so sad that no one bother to respond emails and messages.