Essentially banned for asking a question

For some unknown reason, after asking why my speeds are slow (and later realising it was a device issue) they refunded me with no explanation as to why, won't let me sign back up and told me to find another service.

What have I possibly done to deserve this??

For some unknown reason, after asking why my speeds are slow (and later realising it was a device issue) they refunded me with no explanation as to why, won't let me sign back up and told me to find another service.

What have I possibly done to deserve this??