Use a black candle, with a picture of the person (if obtainable, otherwise inscribe their name on the candle) placed underneath. Also a piece of parchment with the person's name on it. Carve the Divine Names "Eel kanno taf" onto the black candle. Anoint the candle with Banishing Oil (Black Pepper Oil is good for banishing). Burn for nine nights, each night reading Psalm 94. Put the candle out after Psalm is done (NOT by blowing it out). On the last night let the candle burn all the way down. While the candle burns (on each night), meditate and focus strongly on the aim in mind. Imagine strongly the person leaving you alone; imagine strongly their evil deeds turning back onto themselves. Do this for about 5 minutes each night before you pray the Psalm. (Note: a purple candle could also work for this, but used black if this person had been very harassing in a serious way).