Your post is a little hard to follow.
If I understand you correctly, you created a "temporary" address on a website some time ago in order to receive Bitcoin there. Then recently you accidentally sent some more Bitcoin to that "temporary" address but it has not appeared in your account. Is this correct?
If so, there is nothing that users here can do to help you. All you can do is contact their support. It would be best if you had the txid of the transaction in question so that you can prove to them that Bitcoin was sent to the address.
Also, there are no such things as temporary addresses. Addresses are not temporary, they can be sent to multiple times, whenever you want, and the network will not care. However the wallet provider may stop tracking addresses if they so choose, although doing so is typically considered bad as people still send Bitcoin to previously used addresses.
Sir I am not created any temporary address, my case history is as under :-
On 27th Dec. 2016 at 09.58.05 hrs I have remitted 0.16375102 BTC to 36Vde3ZR7JuhsoKSpTDoLJx6JVhxy765h8 from my Unocoin BTC Address 3PA6kinhz2pHXcHNKzLKQP6roC4wpByaKK. But in the transaction hash link my BTC address has been shown as 391eM7KQSyjCUBtRUZT1dcgF29FMQodwuB instead of 3PA6kinhz2pHXcHNKzLKQP6roC4wpByaKK. This means the BTC Address allotted during this transaction in behalf of 3PA6kinhz2pHXcHNKzLKQP6roC4wpByaKK i.e. 391eM7KQSyjCUBtRUZT1dcgF29FMQodwuB is also pertains me I have no awareness about who or in which wallet created this new BTC Address. Because this ID has been created my Unocoin wallet while above transaction made. . In this connection the transaction hash Link may kindly be perused.
https://insight.bitpay.com/tx/dcb6f082e6d63fab9cf96058dd3607c2b4fa0ea087d7fad52f8ae3807f4a4431Further On 30th Dec. 2016 I need to be remit 1.5382 BTC to same vendor to his BTC Address 36Vde3ZR7JuhsoKSpTDoLJx6JVhxy765h8. But erroneously I have send the BTC to 391eM7KQSyjCUBtRUZT1dcgF29FMQodwuB which BTC Address has been generated in my previous transaction on behalf of my Unocoin BTC Address (i.e the BTC address is also pertains to me) and the transaction status has been shown as Payment Successful. That means this BTC should be credited into my BTC account 391eM7KQSyjCUBtRUZT1dcgF29FMQodwuB.
https://bitref.com/391eM7KQSyjCUBtRUZT1dcgF29FMQodwuBSo I don’t know in which wallet I have to use to see my this newly created BTC address to get me the BTC Back.
In view of above, it is requested to Unocoin support to findout my BTC and same may be credited into my Wallet. After prolonged correspondence, I have received following reply from them
(.) QUOTE (.)
The wallet address we provided to you is your address and we recognize any bitcoin coming into that address (technically called a listener) and we will give those credit to your Unocoin wallet. However, this is only the mechanism for you to deposit bitcoin into your wallet. We keep moving these funds to cold storage periodically to secure your funds on the background for any unforeseen circumstances our server could face.
When you send out bitcoin, we debit your Unocoin wallet balance but the bitcoin goes out from the global pool that is dedicated for sending out the transactions. The temporary addresses that gets generated at this time wont belong to you in any manner. We also will be consolidating the sends (like let us say in that same minute if 3 customers are sending out bitcoin, then all these three happen under the same transaction hash and from our one temporary address). The address is public in nature and any one can put bitcoin into it, but no claims can be done on them as such address will belong to none. Also we wont be able to credit them to your Unocoin wallet or reverse such transactions. (UNQUOTE). So please guide me there is any possibility to get my BTC