A member who purchases creditable service may not rescind the purchase of that service nor receive a refund of the payment or payments made towards that purchase unless the member takes a refund of all member contributions under the provisions of 3 M.R.S. §805- A, 4 M.R.S. §1305- A, or 5 M.R.S. §§17705-A or 18306- A.
94- 411 C.M.R. ch. 406, § 4