If provider of the service (seller) decides not to perform the service after requestor (buyer) accepts your bid then are there consequences levied?

A seller bidding and then not delivering the service is something Helptimize platform wants to discourage. Of course there are times an emergency comes up and the service provider will need to cancel. However, in these situations when seller cancels after their bid was accepted, Helptimize will charge seller a fee per the terms and services agreement, plus lower their rating each time. Helptimize will then find other sellers to bid on the service for the buyer.