We've been paying $500/month since we started using this SaaS company several years ago, as one of their first customers. The company sold to some other company in April.
On July 19, of this year they sent us an invoice for June saying it cost $500 (the usual rate, Due Aug 1 and we already paid it) and then mentioned in the same email that in July, the same services would cost $2500+. This came as a complete shock, so we fully moved off of the service by August 3.
Can this company charge us $2500 for July even though they gave us notice of the rate change 2/3 of the way through? We are happy to pay them $500 for July.