Two issues – Site using up too much hosting resource and need help adding biz

Hi
Can you possibly help me with the following 2 issues on http://www.whatsgoodtodo.co.uk?

1. the hosting company told me the following –
your site is eating up as much resource as you are given because your
code needs fixing, so until this is resolved it wont matter what package, server,
service or even host etc you are using, you’ll keep eating up all resource given and
in turn will then keep experiencing site issues because of this.

my note – the issue seems to be with geodirectory. site has 2 x cpu, 50+ gb disk space and 8gb of ram but there are still 404 errors in front end and lost connection errors when in as admin in back end.
This is costing me an unaffordable amount in hosting. did try moving to the hosting company suggested on link you sent me, but could not afford to have my reviewers.whatsgoodtodo.com site migrated over or the fee to pay to move each email address account. it would have run into hundreds of dollars that i do not have.
2. please can you help me add the business listings function to my website? you kindly added events for me yesterday/today.

what kind of listing would a place be? an actual town?
what kind of listing would a business be?

i need it to show under listing and add listing.

please help. all the errors are making wgtd look unprofessional which is upsetting given the years ans years of hard work that have gone into the website.

we have had these issues since having to move over from geotheme to geodirectory.

Thank you.

Debbie