Girls communicate with their priority at which they need something from you. If they don't have an immediate need for cash then they don't see any reason to reply.

In the past few weeks I had the number of a thai ML, helped her outside the shop with something simple for me, hard for her. afterwards we had some rather nice sex at her place. A few weeks later she txt with a request for me to do something which I couldn't do at the time she wanted. She blocked me.

As is often mentioned here, remember these are often not the brightest sparks we are dealing with.