No account number of contract

Hi,

I wish that I had checked all the similar issues on this forum before signing up for Virgin.

A salesperson visited at the end of March to sign me up for Virgin broadband, I told him that my current contract with Sky ran until 3rd May and he assured me that the crossover would be done then (actually he said that we could overlap by a week). He also convinced me to sign up for the TV but did not warn that the TV box had to be in the same room as the cable box due to the cable lengths

After he visited, I had no contact from Virgin at all until yesterday when a box of equipment arrived at my house, and this morning my Sky broadband was switched off.

I have had no contract, no account number, or details around billing. Any contact with the online message chat usually results in them telling me to just "plug in your devices and start using your services"

Can anyone advise how I can get my account number, and contract details to allow me to use the Virgin services? Although, at this point, I am regretting my decision

Thanks