I've had a right run-in with a Persian caterer recently. Quoted me a thousand quid to do a shitty event for which everyone else is quoting Ł300, I told him the price was no good, then he called me three times a day begging me to reconsider and that his offer was great value actually and I'd got it all wrong.
Luckily I'm well practised at confrontational discussions with Persians so managed to shake him off after about three weeks.