2 transaction in same address - Please help Sent my  btc address 3 days ago for a payment to one of my customer  he didnt respond or paid . next day i provided the  same address to my another customer for a payment which he sent. Now today i received an email from my 1st customer that he paid the amount to same address that i provided 3 days ago . Please anyone here who can help me to recover the funds . I will lose my job &amp; anyone here who is kind enough to help to simple tips .

https://www.blockchain.com/btc/address/15iga5K4hLMjDFox24mvjjuak2g3cKVtMK
The address you linked has received two payments, if you control the private keys for that address then you have nothing to worry about, those coins are in your control. 

Generally, it is not best practices to reuse an address, as it is very bad for your privacy (and, potentially the privacy of your customers). However, in terms of being able to spend the coins later, there is no technical issue with receiving more than one payment to an address. 

You should be able to spend the two UTXOs as normal.