Disappointed and Angry - Beware of Virgin Active promises

I signed a Virgin Active contract effective for 1 December 2015 after being contacted by a Virgin sales agent. The reason for my signing up was to benefit from a Momentum Multiply special offer with an 80% discount on membership fees for the first 6 months. The agent, was able to pick up my Momentum Myriad Life policy on the system and told me that all I needed to do was submit my Multiply application form effective for 1 December 2015 which I duly did. I noticed that there was no reduction on the debit order for the first 2 months and assumed this is because an average is used. I contacted Multiply after this and was told that they do not see my Virgin active profile. After many calls and queries, Multiply told me that Virgin should have activated the Multiply from their side from the beginning. Multiply tells me that I should apply for a new Virgin membership with this link. I was told that previous points from visiting the gym will be disregarded. Since it was never done correctly from the beginning I do not trust Virgin systems and will not risk signing ANOTHER contract and have a bigger problem. I had signed the Virgin contract on the basis of the Multiply membership and discounts. Neither Virgin agents at the gym nor Multiply have taken responsibility for not linking the accounts. I was told by the Virgin agent that this will be done and I should simply sign up immediately. I have asked that my Virgin membership be linked to Multiply and backdated to inception of 1 December 2015. This is what I was promised when I signed up and the only reason for my taking out the contract. But, after endless calls, emails and promises from the Virgin branch it is evident that no-one is willing to take any responsibility or remedy the situation. In the meantime... I am so angry and upset I have not been able to step inside that gym and the debit orders continue as I await a response from Virgin