i have...i'm a canadian of indian descent. once i went to Pakistan and arrived in Karachi on a PIA flight from Toronto. Since my final destination was Delhi, i was supposed to be put in a Hotel for my connecting flight to Delhi the next day. before i left Toronto i had checked with PIA and Pakistani Consulate in Toronto and they all said that i didn't need a visa. this immigration officer gave me all the hassle and refused to let me in. in the meantime, my uncle had come to pick me up who is a high ranking public servant [IG Police]. when he learnt about the situation he walked into the area i was sitting and waiting and it was funny to see that the same people who refused me entry were wagging their tail behind him...offcourse, i was allowed to go into the city with honor...thanks to my uncle haha
Its not nice what has happend with you but unfortunatly this also happens the other way around. Its next to impossible to get visa for India if you have a Pakistan paspoort or ur origin is Pakistani. I think this will continue unless we trust each other and stop fighting with each other, i hope it happens very soon.