Your help with the followng please:

Sen bana pazartesi para english money yolla istanbula gidiyorum. Sen gelene kadar mart 30 unda ben istanbula gidiyorum. sen gelene kadat. Seni cok kata mismis kiskir.

you send some money ( sterling )to me i'll going to istanbul on monday. i'll be in istanbul untill you come ....

Thank you sago.

I thought this message said the sender was going to Istanbul on 30th March.

im going to istanbul until you arrive on the 30th of march

my try