Rather Stay - No, Rather Go

Cancelled the contract in July due to under utilization for the year by a single visit, was contacted by the retention team who negotiated an extension of contract at the original reduced rate. Their retention/finance team cannot get it right and we are on month 3. Incorrect amount continuously debited. Clearly the retention team works on commission as they are very responsive when negotiating but are non responsive (7 email trails) when it comes to rectifying their lies. Irony = the retention department that convinced me to stay is now the department that convinced me to go elsewhere. Reviewing other complaints, seems to be a trend.