16.1 If we fail, at any time during the term of a Contract, to insist upon strict performance of any of your obligations under the Contract or any of these terms and conditions, or if we fail to exercise any of the rights or remedies to which we are entitled under the Contract, this shall not constitute a waiver of such rights or remedies and shall not relieve you from compliance with such obligations. 16.2 A waiver by us of any default shall not constitute a waiver of any subsequent default. 16.3 No waiver by us of any of these terms and conditions shall be effective unless it is expressly stated to be a waiver and is communicated to you in writing in accordance with clause 14 (above).