Asking tenant to vacate with 1 month notice

Hello, I am the owner, i asked my tenant to see if he wish to continue once his contract is over which he refused. So i asked him to send me photos of house so that i can look for new tenant (i stay abroad), but even after 7 days i did not receive a single photo so i called and told them to send the photo or if they do not have time then i can send someone with their permission but they refused also refused to allow any viewings while they are still staying. So basically leaving me no time to look for new tenant to which i said in that case i will deduct 1 month rent from deposit after this argument they agreed to have viewing. But right after this conversation, husband of tenant sent me message that i am harrassing them by requesting photos and possible viewing. 4 whats app messages and 2 calls lasting less than 3 mins is termed as harrassment? That too in span of 7 days. After this conversation, i decided to end the contract prematurly by sending email with notice of 1 month to vacate the flat as per agreement which is 15th sept 2019. I want to ask is not cooperating with me to find new tenants and then accusing me of harrassment is justified to ask tenant to vacate the premise? I have given him 1 month notice as per contract, do i have right to do so? Below is the clause from contract 10) Cancellation: That, Subject to the condition of lock in period (if any), if the Licensee commits default in regular and punctual payments of monthly compensation as herein before mentioned or commit/s breach of any of the terms, covenants and conditions of this agreement or if any legislation prohibiting the Leave and License is imposed, the Licensor shall be entitled to revoke and / or cancel the License hereby granted, by giving notice in writing of one month and the Licensee too will have the right to vacate the said premises by giving a notice in writing of one month to the Licensor as mentioned earlier.