Restore Website from Backup

Description of support work: Restore website from Back up files available Extra notes: Hi, I have tried to adjust some HTML code on my website which has caused it to stop working. I need to restore from a backup file but thought it would be best to leave this to someone who knows what they are doing so we don't have any issues. I have located the backup file and imagine this will be a simple process. As such I would appreciate sensible quotations. Look forward to hearing from you, Zain