Finish a Wordpress Site

I have a Wordpress site that was being completed by another developer, unfortunately he cannot complete the site and so I need someone to finish it.

There is a booking system available. Clients can create a re-occurring bookings linked to a calender. There is a glitch where a client can create a reoccurring booking for 10 Weeks at 10:30 Monday, a second client can create a booking for the same periods, (say 5 weeks) and the system allows the (duplicated) booking where it should reject it as the booking as a duplicate.

So I need someone to fix it. There are a few other issues but this is the biggest.

The purpose of contacting you was to establish contact, that you are currently able to help and to determine how best to take this forward?

I was thinking that i would detail the errors and changes required and you would review and price.

There is definitely another piece that i think you could review the site and possibly suggest amendments, if you do that as a service?

Hope this all makes sense.

Regards Tim