Was not given the implant size I asked for - Should I be entitled to a second Breast Augmentation?

I am currently 11 months post operation in which I had 275cc HP, originally I thought I was going to be given 375cc but was told on the day this was not possible and not given any further information to cancel the operation. I feel my implants are too small and they have creased in the middle as if my own tissue sits over the implant. I was offered liposuction as a fix for this however this is not what I paid for. Is this common and where do I stand?