What is the meaning of per week or part thereof for services provided?

"Per week or part thereof" means that the cost or rate for services is calculated on a weekly basis, and even if the service is used for only part of that week, the full weekly rate will still apply. For example, if a service is billed at $100 per week and it is used for just one day within that week, the full $100 charge would still be incurred. This approach is often used to simplify billing and ensure that service providers receive a consistent payment for their offerings.