Zoomer, are you on your own? Some blokes get a kick out of doing this to women who live on their own, as they see them as an easy target (no partner to go around and 'sort them out').
Many years ago, when I lived as a student, myself and my then partner were renting a house in a lovely village, it wasn't a typical student rent (although my partner was working), we found out through the letting agent, that if the guy started bugging me, we HAD to report it to the police. The reason? The lass who owned the house had been insulted, propositioned, verbally abused and generally her life had been made unbearable by the boor next door. When her partner went around to 'remonstrate' with him, a fight had ensued and the neighbour who started it all went to the police to prosecute her boyfriend for the compensation he'd get. Unfortunately for him, they'd logged all of his provocative behaviour, and they were waiting for a court date, but had been advised to leave the house (hence renting it to ensure the mortgage was paid), until the issues had been setttled.
We got to know the outcome, the guy was a serial annoyer, he'd do it until a party snapped and beat him up, then he'd sue for compensation. Of course, there was a record of this, so when my landlord took him to court, and had the evidence of the other guy being a prat, and doing this on several occaisons, he didn't get away with it. He was given a restraining order (meaning HE had to move out when she moved back in), ordered to pay HER compensation, and given a suspended sentence, meaning if he did it to ANYONE in the next two years, it would be go straight to jail, do not pass go and do not collect £200.
So there is hope, just keep logging his behaviour, it might even be the same chap we're talking about, so be on your guard, and whatever you do, don't resort to violence, otherwise you might end up paying him for the pleasure of beating him up.
Apologies for the long post, but thought I'd let you know there are people who either make a living or can go on lovely long holidays by being a-holes and occaisionally being given a good hiding.