Ask for a refund?
Also I am sure that there is a network freeze in December by Telkom… No line upgrades are done, I may be wrong. But howcome you did not check your line stats to confirm the upgrade.
Further you probably only paid pro-rata for 40mbps account since the date you requested to...
Also ran into this issue. Went through two towns to find a screw and didn't come right.
Eventually went for this: https://www.amazon.com/gp/product/B07GN8QHD6/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1