Please refer to the following paper for a summary of the service quality models, see pp. 935-938:
Seth, N., Deshmukh, S. G. and Vrat, P. (2005) Service quality models: a review, International Journal of Quality and Reliability Management, 22, 9, pp. 913-949.
Some examples:
The GAP model (SERVQUAL)
Parasuraman, A., Zeithaml, V. A. and Berry, L. L. (1985) A conceptual model of service quality and its implications for future research, Journal of Marketing, 49, 4, pp. 41-50.
Parasuraman, A., Zeithaml, V. A. and Berry, L. L. (1988) SERVQUAL: A Multiple-Item Scale for Measuring Consumer Perceptions of Service Quality Journal of Retailing, 64, 1, pp. 12-37.
Retail service-quality scale (RSQS )
Dabholkar, P. A., Thorpe, D. I. and Rentz, J. O. (1996) A measure of service quality for retail stores: Scale development and validation, Journal of the Academy of Marketing Science, 24, 1, pp. 3-16.
Service quality, customer value, and customer satisfaction model:
Oh, H. (1999) Service quality, customer satisfaction, and customer value: A holistic perspective, Hospitality Management, 18, 1, pp. 67-82.
Internal service quality DEA model
Soteriou, A. C. and Stavrinides, Y. (2000) An internal customer service quality data envelopment analysis model for bank branch, International Journal of Bank Marketing, 18, 5, pp. 246-252.
The Perceived Service-Quality (PSQ) Model
Grönroos, C. (1984) A service quality model and its marketing implications, European Journal of Marketing, 18, 4, pp. 36-44.
Tourism planning model
Sautter, E. T. and Leisen, B. (1999) Managing stakeholders - A tourism planning model, Annals of Tourism Research, 26, 2, pp. 312-328.
Synthesised model of service quality
Brogowicz, A. A., Delene, L. M. and Lyth, D. M. (1990) A synthesised service quality model with managerial implications, International Journal of Service Industry Management, 1, 1, pp. 27-45.
Tour operator’s service-quality-evaluation model
Śimkus, A. and Pilelienė, L. (2012) Tour Operator's Service Quality Evaluation Model, Management of Organizations: Systematic Research, 61, 7, pp. 101-114.
Have you seen the "Journal of Service Theory and Practice"? There are occasionally papers on the subject of service quality there.
There are many methods and standardized mechanisms for QoS and QoE estimation for communications and computational services (if you are interested we can take offline).
QoS is a very broad aspect and is generally common within the multimedia community. There is no standard rule as to which can be the best options for QoS evaluation. In fact, ITU has many different techniques for QoS/QoE evaluation. I guess, you have to select the best method depending upon your research context. If you are interested in the ITU perspectives can have a look in to the following article that tries to summarize their efforts.
Article A Survey of Standardized Approaches towards the Quality of E...