Payment date

I cannot make the first payment until the 18 th of January and then on the 27 of every month

What is your actual question.

I cannot make the first payment until the 18 th of January and then on the 27 of every month

Your direct debit will be taken on the date you have been given. If you wont have sufficient funds available on that date then I suggest you contact Bulb by phone as soon as possible to discuss your options.