In that case you can banish and cleanse right now. There’s no need to wait. It’ll work or it wont and if it doesn’t then you can do it again or get heavier.
I would that that person is you. You’re being your own worst enemy with this assumption that you’re not good enough. You MAKE it true because that’s what you think, that’s how magick work - YOU are the instrument, everything about you is the instrument and you are only as good as your calibration of your mind and body.
After that, this forum is not about advertising services, it’s all about learning to do your own magick. If you can put up with the situation until you learn enough to feel more comfortable, great, if not, we can wish you good luck, but apart from the forum owners rituals for hire we can’t endorse anyone. Mostly because it would turn this from a discussion forum about magick to a spamfest of adverts, scammers included, and the forum owners can give you a refund on their stuff bought through the becomealivinggod site (if it came to that), but not random others.
It’s in your attitude. This isn’t as much about having astral senses developed, as visualising and getting your mind right. You don’t need a delicate conversation here. You need a flamethrower, you can use a sledgehammer to crack this nut and nothing with ever mess with you again.
try motivations videos on youtube, Goggins is good, listen to angry music - try Kreigsgaldr (war chant) by Heilung, say. Put that on repeat, listen to the battle drums and go kick some ass.
I used the song in this post, with headphones - that ritual was a couple of hours of stomping up and down looking like a crazy person probably, but I was on my own in my house, so. 
Music is very evocative for getting the right energy, although you have to be halfway there it can’t replace willpower totally where there isn’t enough. I don’t see why you can’t get thoroughly indignant and angry about this unprovoked attack - who do these fuckers think they are anyway, none of this is ok and you are well in your rights to defend yourself. Self defense is a universal law on your side - you have the high ground so use it.