I Cant play call of duty

Check this link for a possible solution:

https://support.xbox.com/en-US/xbox-one/networking/slow-performance-solution

From what you are describing it sounds like you joined a modified match. Unfortunately there is no recourse or fix for this. Activision has not allowed Treyarch or Infinity Ward to patch any of their prior games to disallow the
use of any cheats/mods. If you have severely negative XP in that game then the only way you will be able to play is if friends invite you into a match/lobby. Or you would have to create a new account and start all over again.

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Should you enter one of these types of matches again do nothing, hit your Guide button and return to Dashboard. If you stay and participate then you would be subject to enforcement action and the punishment is a permanent account
ban from XBL.

So you was on a ' cheated ' lobby , you can contact the support of Activision for following the steps to do.

You can always try to reset the router, restart our xbox360 and instal the game on the HDD.

If it always don't work , you have no choise , and you have to contact the Activision Support with Phone or with the Mail

i can play but eventually it lags me out the game and says cant connect to call of duty servers

I cant connect to call of duty 3. Says the server is messed up. What can i do to fix it and play ?