Any lawyers in the house?

[Bad Boy Rob]

If you are a new client and start processing with them now I reckon they can. They can draw out a new contract and say you are not allowed to process with Ibill for future clients. If you then sign you are legally bound by it.

However they are now implenting something that customers prior to this announcement have not signed up to. You could easily tell them to fuck off and then if they cut your service you would win in a court of law as you have an agreement with them for them to process.