Should it appear from the affidavits of a party opposing the motion that he cannot for reasons stated present by affidavit facts essential to justify his opposition, the court may order a continuance to permit affidavits to be obtained or depositions to be taken or discovery to be had or may make such other order as is just.
Should it appear to the satisfaction of the court at any time that any of such affidavits are presented in violation of Rule 13, the court shall impose sanctions in accordance with that rule.
Tex. R. Civ. P. 120a