Sir I need cancel my agreement and I want my 2 CHQ...

First of all and to give you legal advice, the type and content of the contract must be clarified, but in general, regarding the termination of the contract and the recovery of checks, we must show the following:
First: If the contract includes a specific mechanism for terminating the contract on the part of one of the parties, this mechanism must be followed
Second: If the contract includes the payment of a penalty clause to terminate the contract, this condition must be met
Third: If the contract does not stipulate a mechanism in the contract, the termination shall be done by sending a notification through the notary to the other party asking him to cancel the contract and return checks.