Force to complete bet
I was playing live no limit hold'em tournament in LA.
Blinds: SB1500, BB3000
I am middle position. No one called or raised in front of me. I look down at AXo and figure I can steal the pot from the BBs. I announced I was raising, and push forward 7.5K (2.5bb) Seven 1k and one 500 chips. The dealer said I need to complete my bet??? I didn't know what he was talking about. I should be able to bet whatever I like as long as it's more the minimum raise. I ended up removing my 500 chip and replacing with 1K chip, tor a total of 8K. After a short argument with the dealer, one player calls and the BB moves all in... I have to fold because I was lost on what was going on and didn't have a good read on the other two in the hand.
I looked all over the internet for something. Closes thing I could find was called on string betting. I announce I was raising (no amount) and in single motion moved 7.5K chips in middle of the table. After I move the chips, I said the amount, to 7.5K. I couldn't find anything saying that did something wrong. Please help.