Strange spaces in email template

We've set upan email template but when I do a test email we have strange spaces when the test email comes through. Here's the code for each section and then I have written where the spaces are.... It pushes the attached invoice down the page and looks unprofessional.... the spaces don't show on the email as i send it - only when it is received....

invoice template code:

Dear ::their_name::

We have created a new invoice for you, as you requested, which you will find below. Please also click here to view ::statement_link::

Payment via Go Cardless is preferred if possible - simply click your statement and choose "pay by Go Cardless".

SPACE

SPACE

SPACE

SPACE

SPACE

SPACE

**

::statement_type:: Details **

::statement_type:: Number:
::invoice_link::

Description:

::statement_description::

Amount Due:
::statement_due::

SPACE

SPACE

Kind Regards,

::my_name::

::my_company::

T: ::my_telephone::

W: ::my_website::

How do i get rid of the spaces? Many thanks