While I am no expert in the financial market, I have to ask what do you expect them to do.
It sounds very much like they've met their obligations under the contract, and you want something for your loyalty. It appears to be not worth their money to offer this, as ultimately there a business that needs to make money. Either accept the offer or take up an offer from another provider, you can't make them offer you a special offer.
(unless of course you have a singed contract stating the contrary).