Agreed, don't summon a deity, especially one with an unfriendly reputation. Usually you welcome them into your circle and ask them to join you. Summoning is to try and drag them in at gunpoint, doesn't end well.
What was the mistake exactly? I'm sure it isn't so bad you need 'the Lord of darkness' to fix it.
If you do wish to work with Lucifer, look into prayers, rituals, favoured offerings, etcetera, and set up an altar in his honour. Working with deities is like working with people, if you see a stranger has a pizza, you don't walk up and take a slice, you have no idea how this person would react. Deities are the same way, some are fine with you running up to them begging for help, others [probably Lucifer] would look at you and possibly hit you for bothering them. [Not physically hit, karmic slap is what most people I know call it] try looking into other options to fix your problem if you don't have a relationship with Lucifer.