Gap model can be explained as shortly that there are some expectations of the customer from the organization, after service presented, service quality determined by comparing these expectations with their perceptions from service (Chang et al., 2002). Parasuraman et al. (1988) also developed an instrument which was SERVQUAL. The original SERVQUAL instrument comprises 22 statements used to assess service quality across five dimensions (tangibles, reliability, responsiveness, assurance, empathy) with each statement used twice: once to measure expectations and once to measure perception. According to Wisniewski (2001) SERVQUAL can be adapted with minor modification to any service organization.