Why do i have to wait 3 weeks to take of activation lock when the phone is mine and is associated with my account?

You need to contact Apple support again. Use one of these options:

Get a call from Apple support https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362  Be patient. Sometimes Apple phone support is not available.

Apple Support Twitter  https://twitter.com/AppleSupport  There may be an hour or so wait.

Apple ID account security for country-specific and region-specific help https://support.apple.com/en-us/HT204169

Get Support: We’re here to help https://getsupport.apple.com/. Go through the options to find the best support option for you.

Activation Lock Problem

If you purchased the device second-hand, then it is useless without the Apple ID and password to which it is locked. If you don't have it, can't remember it or cannot get it, then the device is useless to you. Try to get your money refunded, if you can, or take it to an Apple store for an exchange provided they will help you. If you are the original owner, then take the device, a copy of your purchase receipt and identity proof to an Apple retailer where they may be able to assist you. For a deceased owner see How to request access to a deceased family member's Apple accounts - Apple Support. Note: there is no guarantee that anyone can gain access to the device.

About Activation Lock on your Mac - Apple Support.

Activation Lock - Turn off Find My iPhone.

About Activation Lock on your Apple Watch - Apple Support.

Turn off Activation Lock - Apple Support.

Need  to  disable  Activation  Lock  on an  iPhone  or  iPad?